Jizzing on the remnants of peanut butter after you've licked it off of a girl's pussy.
My girlfriend likes it when I eat PB off her pussy. So after I was done I nutted on it and gave her a fluffanutter
by Banned As DC May 22, 2016
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when you blow your load in a friend or enemies sandwich (preferably peanut-butter)and let them eat it while you sit there and laugh your ass off.
tori grab just ate a fluffanutter sandwich
by joe hutchings October 29, 2007
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