AM/FM, adj. — Green’s Dictionary of Slang

AM/FM adj.

[the two varieties of radio frequency]

bisexual.

1987		in Newsweek 13 July 44: Bisexuals [...] AC/DC, AM/FM .
2001		www.queerbychoice.com 🌐 AC/DC Ace-deuce All-rounder Ambidextrous Ambisextrous Ambisexual AM/FM Bi Biaxial.
2002		The-House-of-Love.org ‘Bisexual Names’ 🌐 ambisexual • AM/FM • bats and bowls • bi • bi-bi-baby • bi-curious • bicycle • bi-loving • bipe.