Katie, who was beginning to feel reeeeally uncomfortable with Tiff pressing up her udder against her as she rubbed her teats as milk dripped from them, wasn't able to hear Tiff very well. "Huh Tiff what did you say? and could you please back off a bit your dripping milk on my pants" Katie tried backing up a bit but a moaning Tiff kept moving close. "Too late now you get *moan* both" Tiff said "wha-what!?" Katie looked up at Tiff who was moaning as she rubbed her teats more frantically "Tiff you wouldn't have? why?" Katie had a surprised look and a small sense of fear from looking at Tiff's lustful face . "Well Katie you kind of ooooooHmmmh sorry this Udder is really sensitive, but you put it on me first" Katie frowned "Well how was I supposed to know that it was going to work?" she stared at her friend who looked like she was jacking off as she stroked her teats "besides you seem to be really enjoying it". "Well ooooooouuuuuhhh yeah this is better than regular masturbation, but still you gave me an udder and don't act like i don't know why" Tiff was beginning to feel wet between her legs and her nipples we're getting really hard as she stroked and fondled her udder "Well i mean..." Katie looked to the side "Yeah mmmmhhhm" Tiff bit her lip for a second " I know you've always been jealous of my d cups heck is no secret you call me cow when i call you no cans ooooooaaaah" Tiff was getting hornier by the second "We've wasted enough time, for your transformation your clit will start growing and expanding until it becomes a hard 11 inch dick you shall also grow a second pair of arms right below the first and to show you im not all that mean your breasts shall grow to c cups while also a second pair shall grow below the first up to small b cups" Katie was shocked her friend was taking things far and before she could protest Tiff added "OOOOOooahmmh for your dare you will fuck me hard and enjoy it, you will also enjoy playing with breasts and my udder and more importantly milking me" as soon as Tiff was done Katie began feeling her cute and petite body change, she began feeling a pulse building on her clit and it was making her horny. Katie was trying to fight the hornyness, the raven haired girl was scared as too what was happening she then felt another pulse that came along with pain from her sides she clutched her self as it happened, another pulse and this time her chest and the area below felt warm. Her shirt began feeling constricted and her pants tight, Katie began trying to take off her shirt but with every pulse she felt it became difficult, with a bit of effort and struggle she was able to pull of her shirt reveling two tiny stubble to the sides of her petite body that were becoming her new arms. Below her expanding breasts concealed in a cute laced bra Tiff could make out two small brown circles that where puffing out, but what really caught Tiff's attention was the developing bulge in Katie's pants, Katie began trying to unhook her bra as her breasts became squished in there, in another situation Katie wouldve been thrilled but right now she was shocked. Katie's bra snapped on its own as all four of her breasts jiggled her new arms began growing hands and the bulge in her pants was beginning to poke out, when Tiff saw this she began taking off her pants and thong and began getting down on all fours, as Katie's changes finished she examined her body, her new arms moved with ease as she moved them and stretched them, then she looked down her torso to see all of her four breasts wet and shiny from sweat her four nipples fully erect, this made her feel a throb coming from her new member, Katie decided to touch them, they felt incredible soft and squishy all super jiggly, her hands moved to the center where her nipples where, they felt nice hard yet squishy like gummy bears. Her new member throbbed more with each touch begging to be touched that's when she noticed Tiff's bare butt facing her, it was big and cream white plumb and tight with Tiff's bare wet dripping pussy waiting right below and dangling from her abdomen her big soft milky udder. Katie knew this was wrong yet she was compelled to take of her pants revealing her 11 inch dick sticking out of her cute blue and white stripped panties that where soaked by her still remaining dripping pussy.Katie approached Tiff, grasped her butt with two arms and placed two above her friends butt and slowly entered her friends virgin pussy, as she entered her they both moaned, Tiff winced a little since it was her first time but once fully inside she began wiggling her hips. It felt weird but nice for Katie, it felt like a tight slippery grasp around her penis but it felt great, Katie leaned against Tiff pressing all four of her breasts on Tiff's lower back Katie's hard nipples feeling nice against Tiff's back, then reached down to grasp at her Udder despite being a short girl Katie grasped all four teats making Tiff shudder and stick her butt up more causing the first thrust since Katie entered her. Then Katie started massaging and pulling at Tiff's teats causing Tiff to moan and thrust causing Katie to moan and pull on Tiff's teats faster. Katie's tiny feminine hands were able to go all over her Udder making her moan and thrust harder, the feeling of Katie's large member in her tight pussy also felt amazing she didnt know sex felt so good as her friends dick went in and out of her, then there was the nice sensation of having two rows of breasts rub against her lower back. Katie was feeling really good, who knew having a dick would feel so great no wonder guys always want to have sex it feels amazing having her cock being squeezed and rubbed by her friends pussy, not to mention the felling of her breasts rubbing against and the tingling in her own pussy, but what she enjoyed the most was being able to fondle and milk her friends udder her hands getting covered in her friend's milk was making her go nuts. Around this time Tiff felt something weird built up in her udder like a pressure, as his was happening the milk droplets where starting to becoming larger and larger streams of milk until finally with a long moan from Tiff a large spurt of milk came out as Tiff came first. Katie smiled on the thought that her friend came, she pictured Tiff cute freckled face making the moan as her body convulsed and jiggled, she then picture those big d cup breasts she always liked how they looked how they must look know she her friend swayed under her, like real udders minus the milk her friends udder produced.... thats when it hit her. Katie in a half moan said out loud "Transform or Dare?" Tiff heard her friend and while recuperating from the orgasm quickly said in half pants "Transform". "Good, you where right Tiff i was jealous of your big tits but now i love them, in fact i love them so much that i wish they where bigger and produced milk like your udder to for your transformation, your breasts shall grow bigger as they fill with milk and your nipples shall become a little more fatter and slightly longer so i can easily grasp them and milk them". As soon as she finished saying that Tiff's breasts felt weird, they began expanding and pressing against her bra and shirt making Tiff moan again as her already hard nipples became more sensitive and rubbed more against her bra "Here let me help you" said Katie as she got off Tiff and pulled out her dick she then walked over to Tiff's front and slowly unbuttoned her shirt revealing the inch long fat nipples tent pooling her bra. Katie smiled then unclasped Tiff's bra and removed hearing Tiff let out a sigh, when Katie looked she saw something beautiful that made her cock throb, her pussy drip and her nipples reharden, Tiff's D cups had become at least F cups, her pink nipples had darkened and become long and fat enough to easily grasp and tug, and her areola's had puffed up quite nicely. Katie grasped one of Tiff's boobs and massaged it making Tiff moan and pant again "Let's switch positions" said Katie a she sat down and motioned Tiff to sit ontop of her dick. Tiff agreed as she her pussy slipped nicely into Katie's cock, it felt nice for both of them Tiff's udder pressed up nicely against Katie and Katie could reach both of Tiff's breasts and udder since she was only a head smaller compared to Tiff. Katie began thrusting against Tiff again as she four arms began grasping teats and breasts, her lower arms rubbed and massaged the udder causing milk to spurt all over her bare tiny body, while her upper arms grasped at the breasts massaging them with her tiny hands, massaging a lot more areas than normal arms, specially Tiff's areloas and long fat nipples. Droplets of milk started forming at the nipples as the moaning and thrusting started picking pace then the same thing as before started happening in Tiff's breasts as Katie massaged and rubbed vigorously until finally she was rewarded with a long stream of milk spraying all over her face and body dripping down all the way to her four breasts as they rubbed up against Tiff's torso, this brought Katie over the edge as the pressure on the tip of her dick built and exploded experiencing her first male orgasm as she also came. Exhausted Tiff got off Katie's now limp member both of them panting "Wow.... that was something...." said Katie "Yeah...it was just wow...." then after a minute or so.