"Holy crap" Jake whispered in awe. It looked like he had a cucumber and two softballs inside his shorts. His underwear felt incredibly tight too, almost to the point of being painful, but it felt amazing on his massive member. Jake quickly moved in front of a table so that no one could see his bulge.
"Well, I can't make it any worse... or can I?" Jake wondered. The "up" arrow was not greyed out. Quickly Jake pressed it and held it down. The numbers ticked up more, past the point that Jake would call healthy and into the obscene range. The watch finally flashed a notice:
MAXIMUM SIZE REACHED: CANNOT BE MORE THAN 36 INCHES LONG
Jake's eyes bugged out - three feet of cock? Who would want that? He quickly cancelled that.
Otherwise, the options were fairly sparse. A couple miscellaneous options, including "ball size". Currently the box was checked to "match proportions" which Jake assumed meant that his balls would grow or shrink to match his penis. However if he wished, he could uncheck it and manually define a size.
Clicking cancel brought him back to the proportions screen, reminding him that he was over a foot long soft. He realized he'd have to get home with a monster cock in his shorts, which might get him some stares. While growing, his cock had simply curled over itself in the front of his underwear, which meant that combined with his balls, Jake looked like he had stuffed a watermelon inside his shorts. Looking around for a changing room, Jake spotted one and ducked inside, hoping no one had looked long enough to see anything.
Once inside, he quickly slipped off his shorts. His underwear was filled to the maximum, stretched trying to hold Jake's package. Quickly he grabbed the end of his cock and fed it through one of the leg holes of his underwear. It hung over halfway to his knee, and Jake actually worried that his shorts wouldn't cover it if he ran it down his leg. However, at least his package didn't stick out so far since his cock wasn't pushed forward by his balls anymore.
Pulling up his shorts, Jake looked in the mirror. Although it certainly looked better than the mound and it was more comfortable, it was also putting his cock on display for everyone. Even Jake's cockhead could clearly be seen at the end of his shorts. Taking a deep breath, he opened the door and began to briskly walk back home...