Making out with the girls and fighting anyone who gets too close (I just find it really unrealistic that most of the people at Bullworth are hostile at first but then instantly switch to ass-kissing mode as soon as you beat their leaders. I would have thought something like that would have been an even better excuse to hate someone, even if they could kick your head in bad).
...I also just like generally wandering around town and looking out for anything new, weird or interesting.