Expression used by males mostly in their conversations about girls. Fluffin the muffin or to fluff the muff is normally used when a guy talks about having sex with a female. It is a more polite way of saying that you are going to fuck her brains out.
by zumzy January 20, 2003
by RatchetBoo April 30, 2003
by Buttered Quayle April 23, 2019