1. The definition of a baked pastry that is too dense to be a cupcake, yet too sweet to be a muffin.
2. A mouth watering baked good consisting of a moist and dense chocolate center with an outstanding chocolate drizzle, enriched with Baileys Irish cream.
3. A slang term used in reference to an attractive female's lady garden.
Person 1: Hey bro what are you doing tonight?
Person 2: Well first I'm going to eat a few delicious muff cakes before I leave my house, then I'm planning on heading over to that party and getting some muff cake. Care to join?