I'm a comp sci major as well, and I'm pretty sure I've seen it all.
One guy who has nails that are about a half inch long and it's pretty obvious that he doesn't shower for weeks at a time because his hair is greasy and he just seems so...ugh...
Another guy wears a fanny pack to class all the time. One day he walked in from the back right corner of the lecture hall, STOMPED all the way down to the front row, crossed right in front of the professor, stomped all the way to the back left corner, sat down, and started muttering about how he had to go to an AA meeting for his friend.
A professor in my software engineering class last year asked us to just name a type of gun as an example for something. Almost everyone said "GRAVITY GUN ZOMG" (with ZOMG pronounced as "zoh my gawd"). Since he didn't know what the hell that was, he asked for an explanation, which only worsened the situation.
I also see people logging on to SA during class almost on a daily basis, as well as WOW
Then there are those people who are hysterical at every little joke, those who are perpetually congested, and those who speak like they're in a chatroom
The only sane ones are the hot Russian women
