To take a huge rip from a bong, dab pen, bowl,etc. and blow out a huge cloud
The sound in a majority of dubstep songs. It sounds a bit like "yuy".
The whomp bass in that old skrillex song was fucking sick
the white trash slip-n-slide, where you took a garbage bag and throw yourself onto it down a wet bank.
it was raining, so we went out back and went gully whomping and drank a dirty pack of PBR.