Muffin slicer
When a person has a "gut" or a "muffin top" and inserts there hand or penis in the area between where the breast or "tits" sit on top of the "gut" or "muffin top" and strokes back and forth resembling a knife cutting a muffins top.
Yo shawty got a mean muffin top Ima have to hit her with a muffin slicer