ambidextrous, adj. — Green’s Dictionary of Slang

ambidextrous adj.

[SE ambidextrous, capable of using both hands equally well]

a euph. for bisexual.

1967–84		Partridge DSUE (6th–8th edn) 17/2: since ca. 1935.
1972		B. Rodgers Queens’ Vernacular.
1983		Neaman & Silver Euphemisms 241: Ambidextrous Sexually attracted to both men and women.
1999		DungeonNet.com 22 Jan. 🌐 I am a bisexual ambidextrous switch bitch goddess, with many diverse interests around, through and beyond the world of BDSM. Join me for some cyber-coffee!
2001		www.queerbychoice.com 🌐 Ambidextrous? Ambigendered? Ambisextrous? Ambisexual?