Tijuana rumbler

Slang for a Mexican transvestite. Much of the Tijuana female population look like the men, making it very difficult to spot transvestites. In many instances men engaged in anal sex with a Tijuana woman get a little surprise when she lets out a low, raspy moan (rumble), because in fact she is really a man. Sometimes this is the only way to tell. The real women actually squeal instead.

Used in a sentence - "I was in Tijuana last weekend screwing this whore who turned out to be a Tijuana rumbler. Holy shit was I surprised!"