A sandwich comprised of marshmellows/jet-puff cream, peanut butter or Nutella, and Nutter Butters, with an extra Nutter Butter placed on top for effect.
"Would you likeanother fluffernutteranothernutterbutter, hm?"
"I've lost all respect for Steve... He's officially a Fluffernutteranothernutterbutterlover."
A fluffernutter is an overly zealous or eager person.
On a pornographic set, the fluffer is charged with the responsibility of keeping an actor's penis erect without causing him to ejaculate. The fluffernutter fails at their sole job requirement when their enthusiasm triggers a "nut".
The hiring manager was wary of such fluffernutters, their resumes typed in 6 pt font, listing "leadership" roles dating back to elementary school.