my bus rides are usually w/o much incident but the new freshman class at my school is really immature. the guys make crude love jokes and scream & swear at the top of their lungs, and the girls are constantly acting snobby and yelling "shut up" "shut up" "shut up" at everyone.
and i can remember just last year when i was a freshman, that the other freshman on my bus were much more well-behaved and didn't make near as much noise. in fact, as a little "reward" to our good behavior on the last school day last year, my bus driver actually let me and the two other students on the bus (quiet ride!) stand up and do whatever while he drove us home.