1 definition by Ryan DeHart

The act of taking peanut butter and smearing it in your partner's ass during sexual intercourse. The proceeding to anal your partner until you cum in their ass. Making it look like the delicious snack called a Nutter Flutter or Flutter Nutter.
Butt cheeks= buns, peanut butter = peanut butter, and the cum = the marsh mellow paste
So I heard Anthony gave Kamii a Flutter Nutter last night, is that true?

I cant wait to make you a Flutter Nutter in bed.
by Ryan DeHart January 18, 2009
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