wiggle muffin Share definition Flag A vagina. Usualy refering to a wonam who knows how to "work it" A muffin that is unstable thus causing wobbling. Damn that bitch i fucked was a wiggle muffin! Want to eat some fresh blueberry wiggle muffins? wiggle muffin by Nathan Carrier October 20, 2006 Get the wiggle muffin mug.