A 16 year old guy named John was on his new smartphone. An average guy, short cut hair, light acne, a little muscle but not much along with a little bit of body fat. He then saw an odd app on his phone that went under the name "The Store". Just getting the smartphone there wasn't much to lose and he knew how to put it into factory reset so he tapped it. Inside was a bunch of apps he could chose from (some free some paid) and most of them had some sort of magic/transformative theme to them. He tapped on one named "Tap n'Boob" and it loaded really quick. he then loaded it up and then the camera activated. John not sure what to do had it pointed towards his knees and tapped the screen. All of a sudden a small boob with a nipple appeared on the screen on his knee, but felt something odd on his right knee. He looked and saw in real life there was a breast no bigger than a marble on his knee cap. He squished it inbetween his fingers and it was squishy and he felt the tiny erogenous sensitivity. Looking back to the app he tapped the boob again and then the boob vanished. He then tapped and held and a boob appeared and then started to grow. He stopped when the boob on his knee was as large as an apple. it felt odd and flopped around as he moved his knee. John that "This is interesting." then tapped the boob and it vanished.
John looked back into the app shop interested in seeing what apps are inside. Finding one of interest he decided to download...