Green’s Dictionary of Slang

bearded adj.

Referring to pubic hair

In compounds

bearded lady (n.) (also bearded taco) [joc. use of SE]

the vagina.

1964

19641965

1966

1964		‘R. Blake’ Amer. Dict. Sexual Terms 14: bearded lady [...] bearded clam [Simes:DLSS].
1966		Trimble 5000 Adult Sex Words and Phrases.

bearded oyster (n.) [oyster n. (1a)]

the vagina.

a.1922

1916–22

Cary Sexual Vocab. I (t/s) n.p.: Bearded oyster. A woman’s pudendum.