Some kid on PSN BF:BC was yelling rather loudly "LET ME HAVE THE KILL GUYS!" because of all the snipers on the map he was apparently not getting kills, I lol'd.
Oh and some kid on XBL was having an argument with his mother about taking a bath. "I don't wanna take a bath, I'm not even dirty, MOM I'M CLEAN! I don't want to take a bath! PLEASE! LET ME GET THIS KILL! (We were in the lobby) MOM!" it went on like that for five minutes easily, until I swear to god, his mother comes on the mic and proclaims to the rest of the players "Kevin has to take a bath now. So I hope all of you will understand why he's gone for several minutes." Stupid children and their bath-times, aaah. Good memories.