The action of one laying on one's back with their feet in the air, and having their nutsack placed gently over the anus, then quite forcefully punched into the anus by a second party. (For spite NOT for pleasure)
The most powerful insult of all time. It should only be used in the most serious cases.
butt - The part at the back of the body in which fecal matter, or rather, shit, comes out of.
penis - A male sex organ, the phallic member
nut - WANK
hole - an opening
The word was invented when a wee lad at the young age of 6 required a grand insult. One that would shrine above all others.