Haurukin

see hadoken "ha" = wave "dou" = motion "ken" = punch. who the hell knows, it's probably the misheard taunt that japanime kickboxing/martial arts games use, obvious only by the fact that blue flame that emits from fists after executing a bitchin combo 17x in a row wins the round, and makes you l33t. or, it's something even lamer.