Green’s Dictionary of Slang

schmegma n.

[a ‘Yiddishizing’ of SE smegma]

(US campus) any slimy substance.

1990

199019911992199319941995

1996

1990		Eble Campus Sl. Nov.
1996		Eble Sl. and Sociability 78: Schmegma ‘gross, slimy’ is a mock Yiddish rendering of the clinical smegma.