"Hey! I swear I can do jig whole day long!" Mary exclaimed and stomped playfully.
"Yo sure can. But what about a funnier thing to do, my hot ginger dancer?" asked Travis playfully and put his hand on Mary's waist.
"Not so fast, lad." Mary replied with a thick accent, which she could act or the vial was taking more effect on her. "I think you should taste some of these too."
"Alright. Maybe one with muscles... or make little Travis bigger, if you want of course."
"Not so fast, my dear. You picked one for me and now I pick one for you."
"Blindly?"
"Of course. Did you really expect to choose one after your trick?"
"Fair enough."
"Don't be afraid, you will like it." and Mary gave Travis his most insidious smile.
"I hope so." Travis exhaled and closed his eyes "Go on, babe, I trust you."
"Let's see." Mary glanced at her irish self in the mirror and grinned before she took a vial. The plan has born in her mind immediately, she'll pay Travis the same coin as he did for her. It would be fair... and fun. Mary carefully opened the Irish vial and gave it to Travis.
"What is it, Mary?"
"You'll see. Now, stop talking and bottoms up!" Mary forced Travis to drink the vial, so her boyfriend did so not to spill the vial's potion.
"That tasted weird."
"Oh, shut up already..." And Mary covered Travis' lips with hers in a passionate kiss. All this transformation and body morphing stuff had turned her on. Just a little but still. Travis did not expect such enthusiasm from Mary.
"Wow, hon! Are you sure you didn't drink anything else, like, aphrodisiac?!"
"I am sure we don't need one." With his eyes still covered, Mary seductively pulled off Travis’s t-shirt and started to kiss his chest, "You're the only aphrodisiac I need!"
As she said this, Travis felt the vial going down his throat sting a little, and create a mild tingle across his whole body. He felt the prickling of stubble coming in, and Mary smiled as she watched her boyfriend not only growing a 5 o’clock shadow, but his hair was turning ginger! His facial features shifted around a bit, giving him a handsome typically Irish face with a scattering of freckles.
Travis began to groan uncomfortable and Mary hugged him as his shoulders widened and his spine creaked up, growing him to a solid six foot. As her breast was touching his chest, she felt how his pecs expanded and stretched. Travis quietly moaned as his now bigger and sensitive nipples rubbed against his girlfriend B cups, causing his cock to slowly become erect.
His biceps bulged out, prompting Travis to unconsciously flex his arm, showing how firm and meaty they were now. He can feel his abdomen tightening, but he can't see the impressive set of six-pack abs that he developed. As Mary rubbed her hands up and down them, Travis put his hands on hers and she noticed that his fingers had become thicker and his hands expanded outwards, and become rough and calloused.
Travis was getting more and more aroused but the painful transformation hasn't end. He felt his legs started to grow, and Mary realized that his jeans were getting really tight, especially around his expanded thighs. She quickly unbelted his pants and, despite she struggled a little with his thighs, she managed to take them off. Mary grinned when she noticed that Travis' thighs and calves had become nice and firm with a thick layer of curly ginger hair on them. She used her hands to feel the fur and Travis felt some tickles, but his giggles ceased when he started to feel pain in his groin.
Immediately noticing that something was happening inside her boyfriend's boxers, she pulled out his cock and started jacking it off. As she stroked it, it slowly started to lengthen and become thicker, and even regrow its foreskin. Travis moaned loudly, and suddenly came all over them. She swallowed some of this and smiled while Travis felt dizzy for a second.
"Did you lose stamina or becoming a ginger boy made you really horny?" She teased him as she helped him to open his eyes.
"Holy crap!" Travis shouted in a very thick Irish accent when he noticed that he looked like a professional irish lineman. Just raising his arms made him flex his biceps and his thighs were so big that his girlfriend can sit only on one at the time. "Babe, what have you done?"
"What? Don't you like to be a big boy?" She grinned and before he could say a word she jumped on him and shut him up with a passionate french kiss.