I'm probably the only one or one of the very few, but upon encountering the "head bump" tag the first thing to come to mind is mahjong (Akagi's game against Washizu, to be precise).
TurnStingggPAM
PAMWaaaaah!Isn't that awesome?Never mind that...Did you tell your father you were coming here?Oh, give me a break!Nag
NagHe's not just going to yell at you, I'm in for it too!Uh...nnuh...Oww...B-but I learned how to fly!Why do you always pull such dangerous stunts!!?I don't believe you!!!