Calvin could've easily just zapped himself anywhere with the remote... or given himself the sickest car ever, but he enjoyed his bike a bit too much. Something about going that speed without any armor was just fun especially when moving your legs. He tried a motorcycle but that was a bit much for him at this point. So he was riding his bike... which he did give plenty of upgrades like making it electric for hills and the like. He was just kinda moving around the town/cities aimlessly when he managed to blunder into an unobtrusive building with a sign that read "Trampoline world". He was curious so he approached, zapped his bike locked to a bike rack that was DEFINETLY there are second ago, and walked in curious. Walking in his inner child was screaming to take a turn as he saw all sorts of bouncy attractions from a bouncy basketball court, dodgeballs, bouncy castle-like things, swings into trampoline areas... But then he saw that this was a place for kids specifically... with weight limits and everything considering how it was all designed. He looked and saw a bunch of kids and even a party... and felt jealous... He wanted a birthday party here... or at least to experience it first hand.
There was a quick fix for that though with a press of the remote... Calvin would turn back to normal, but kinda let himself turn into a little kid in shorts and a t-shirt to go into that party. No need for his parents to intend as he carpooled with someone... He was having so much fun, and only excused himself from his fun to go to the bathroom where he went in, sat on the toilet, let himself... go? The kids in the party was young and it wasn't like Calvin had paid attention to which bathroom he went into or whether he had something between his legs. However this bathroom was pink... he had panties between his legs... and was sitting down to pee... Calvin didn't start screaming or anything, but wondered if this meant anything. He just pressed the button to get him into the birthday party and there were a lot more girls than guys... was probably that. Calvin wiped between her privates as she went to was her hands... and wondered if she should stop this and go back to riding her bike...