More polite form of motherfucker

One who has sexual relations with his own mother. A combination of mammy for mother and jammer to indicate sexual relations.

Used as a disparaging descriptor.

Something really Hip as in Good Excellent. Sammy Davis Jr.used it constantly in his stage act. Also a Sandwich in the Philly area. Wild Rock and Roll disc jockey TheMojoMan used it at every radio station he worked thru out the 60's 70's and 80's