Soulja Boy, definitely. I actually don't mind it, all of us were doing the dance at homecoming. It was cool. But when a boy comes running into class screaming, "YOU!!!" it's a little weird.
And a group of boys in my grade will always shout out, "She doesn't even go here!" from Mean Girls. It'll be like,
Teacher: Um, Leslie could you solve this problem?
Leslie: Sure.
Random boy: She doesn't even go here!
They also use their mom's first names all the time. Like, "Hey Nick, Judy's not gonna like that bad grade." and "Dude, how's Mary Anne?" And there's this junior guy named Danny Hunter. The boys (and even some girls) will respond to any question by saying "Danny Hunter" in a high pitched voice. They've even started rhyming it with "Harry Potter" and "Baby Otter".