Definitions by TOP NEEK
happy slap
usually on da top deck of da bus, a rude boi or chav or wateva u wana call him will cum up to you, usually from behind and slap you with his mates recording on camera fone. Some mug will shout 'KKKAAAAPPPPPOOOOOOOWWW' and then the victim wont kno what to do...Totally random but hilarious if your the one recording.
" Wa blo blad? You shud have seen it da ova day i happy slapped this dick head on the bus, was immense"
happy slap by TOP NEEK January 4, 2005