To have sex with a coke slut/meth whore etc.
To beat up a coke slut/meth whore etc.
A stomped donkey is an over-used girl/vagina.
"Hey fuck you buddy how about you go stomp a donkey"
"I stomped this nasty donkey Jenn last night man, Made sure I double wrapped no worries."
"I beat up that coke slut from that party last night, Hillary?
Yeah Hillary, You stomped that donkey eh?"
"Paris Hilton has a stomped donkey"
"Paris Hilton's donkey has in fact been stomped."