What is a gay tea room queen?

A person who likes to cruise the public washrooms for random sexual encounters.

Definition

Slang term used to describe a person who prefers to cruise for random sex in public washrooms. Waiter is one who generally loiters or waits outside the actual bathroom, but is cruising none the less.

Noteworthy: Washroom Faggot is more derogatory, and is used in a sort of camp style by other Gay's.