A girl's pussy and anus after somone butters her muffin. This is a sexual act involving oral sex to both holes, and half a stick of butter melted in the vagina used as lubricant for butt sex.
"Momy! Momy! Can I have a buttered muffin? The man at the store said he'd like to give me one and I REALY like muffins!"
by SPEDcial Forces May 19, 2008