When you slap your boner so hard your balls fly the opposite way.
I hurt my groin after I did my daily bonerbunt.
by xxbassistfreakxx August 07, 2011
When you have a boner, and you sneak up behind someone with the boner near their head, call their name, and then they'll turn their head into the boner.
That girl is hot, I'm going to sneak up behind her and boner bunt her in the face while we're watching Star Trek Next Generation later!
by Micahdykajackoffsen December 23, 2010

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