Usually when someone is working very hard or when they tell a terrible joke and your being sarcastic that their joke is good
Guy 1- hey bro guess what
Guy 2- what
Guy 1-what is fat and goes bump at night
Guy 2-idk what
Guy 1-Ur mom!
Guy 2- wow that joke slapped harder than a weed wacker on a Thursday
When you shave your pubes and they are such a big forest that the razor (weed wacker) gets caught in your pubes and you have no other choice but to tear it off the crotch.
Becky, last night I had a pube weed wacker happen to me and now my crotch hurts!
A sex act that involves a ZZ Top level bush and a man well endowed enough to do the helicopter. The man then uses the helicopter to push the bush out of the way enough to find the promised land