Green’s Dictionary of Slang

1. (US) an attractive woman.

1960, 1975

Wentworth & Flexner DAS.

2. (US gay) the buttocks.

1941		implied in eat poundcake under eat v.
1964		E. Sanders [title] Bugger! An Anthology of Anal Erotic, Pound Cake Cornhole, Arse-Freak and Dreck Poems.
1972		B. Rodgers Queens’ Vernacular.
1989–2003		R.O. Scott Gay Sl. Dict. 🌐.

3. (US gay) coprophilia.

1972

R.A. Wilson Playboy’s Book of Forbidden Words 47: Those who seek the more thorough masochism of being defecated upon ask for pound cake.

4. (US) pornographic writing or magazines.

1995

J. Stahl Permanent Midnight 37: The heady world of magazine porn, or ‘poundcake,’ as it’s known among the pros.