Ac

AC/DC

slang Bisexual. "AC/DC" is a term typically applied to devices that can operate on two different types of electric currents: an alternating current (AC) or a direct current (DC). A: "Dude, are you sure that girl you hooked up with is AC/DC?" B: "Yes! I just saw her kissing some chick at the bar."
See also: Ac, DC
Farlex Dictionary of Idioms.

AC-DC

and AC/DC
mod. bisexual. (Older. Initialism.) I didn’t realize at first that we were in an AC-DC bar! He was reported to be “AC/DC” by a member of the press.

AC/DC

verb
See AC-DC
See also: Ac, DC
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions

AC/DC

Bisexual, that is, sexually attracted to and/or active with both men and women. Originally an abbreviation for alternating current/direct current, the term has been used jokingly since the mid-1900s. Also the name of the Australian rock band, formed in 1973, that is one of the highest grossing bands of all time.
See also: Ac, DC
The Dictionary of Clichés by Christine Ammer
See also:
  • AC/DC
  • AC-DC
  • DC
  • disaster bi
  • bi
  • bis
  • any (one) worth (one's) salt
  • keel over
  • career