When a bunch of your homies "spank" your ass with their penis's

When someone calls spank way too often, usually just to be a bully or to make their confidence level rocket upwards. They also sometimes threaten to call the police.

when you get verbally abused by another adult for being a major douche

A girls vagina is called a front butt. Something you can spank

(noun) a spanktank which is filled to capacity. May be used to emphasize that one has made a sizeable contribution to one's amount of masurbation materials, or that one has not unloaded a sperm load in too long.

Repeatedly punching someone in the ass

In and out .

Punching someone's ass.
Boxing someone's behind.