Things the characters who stuck around for icebreakers would know about Bruce:

He "graduated early" from High School(from his perspective he spent just as much time in it as anyone else, but he finished all of his work a lot sooner from theirs) which is why he can be here without interrupting his studies.

He played football up until senior year, when his time powers were at their most unstable and it started to hurt his performance as much as it helped. He started syncing the wrong way and missing catches because he was moving in slow motion. 

His hobbies still include football, though he doesn't play for any teams any more. He also has been racing motocross since he was fifteen, and is recently into "real" motorcycles as well. 

He's never done any heroing before, though he claims to have taken it upon himself to beat the piss out of bullies in high school.

He never [i]said[/i] as much, but it can be inferred from his other answers that his parents do okay, and he's never really wanted for anything.