The act of placing one's chin on the top of another person's head and working the jaw in a rhythmic, snapping motion to cause a painful, repeated, clunk on the target's cranium. Often performed between rival siblings.
My stupid sister caught me masturbating in my Mom's thong again so I put her in a full nelson and gave her some serious head peter. That'll teach her.
by tjag November 7, 2014
Get the head petermug.