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1 definition by D-Punch

 
1.
When one is engaged in either gay or straight anal sex and right before the giver ejaculates into the receiver's ass, the giver punches the receiver in the back of the head, which intern causes the receivers ass muscles to tighten which results in a more pleasureful cum.
"I donkeypunched your mother last night"
av D-Punch 27 november 2003