back-actor 

One enjoying anal intercourse

If Elton John belonged to Equity you'd describe him as a back-actor

back-actor by terry wogan March 30, 2007

backactor 

(noun) A male homosexual. One who "acts from the back".
Origin: Irish slang, particularly rural.

"Look at the tight jeans on that backactor."
"I hear young O'Reilly is a backactor."

backactor by Donal May 7, 2005