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Something quite humorous and amusing.
"Man, these letters to Santa are real butt-nutters!" --Philip J. Fry, protagonist of Futurama.
by PacificJohnny May 09, 2005
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2
A person who can only ejaculate in the butt of another.
Johnny liked Sheryl a lot but unfortunately he was a butt nutter Sheryl's butthole had been removed after the farm accident.

It was convienent that Jack was a butt nutter since he was also gay.
by Coachy November 08, 2006
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4
when you stick your balls up a girl's asshole
"I stuck my balls in Sharlene's ass last night. I was really craving a sandwich, too. A butt nutter sandwich. Oh!!"
by trevor lahey corey October 27, 2006
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5
When you put it in her but and don’t pull out in time to buy on her back
Hey bro did you smash last night ?
Yeah bro but I had to buttnutter
Damn, bruh
by Wenger January 12, 2018
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6
Noun:

A person who sucks a straw full of peanut butter slam smoothy then inserts the straw in their partners ass and blows.
Jason you are being such a butt nutter.
by Lavaterranova August 28, 2009
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