A sexual position involving two African-American or black males penetrating, with their dicks, a crease of fat near the waist in a 'chubby' or overweight female.
Double: Two (Black guys)
Chocolate: Black guys*
Muffin: Referring to the Muffin Top like properties of the fat woman's waist.

*May also embrace males of other ethnicities, including but not limited to; East Indian, Pacific-Asian, Native American, and Polynesian. :P