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someone who is addicted to anal sex.
"i had some anal sex last night" said john
"your a tailpiper" said peter
by hally perry April 24, 2008
A colloquial term used to describe homosexuals, usually of the male variety. Depending on the context and usage it can range from being nearly euphemistic to extremely derogatory.
Man 1: Man, I don't know how I feel about Dumbledore being gay...
Man 2: Yeah dude, he's a fucking tail piper, it blows my mind.

Girl 1: Man, did you know Elton John way gay?
Guy 1: Yeah, what a f***ing tail piper.
by AnalystTherapist January 07, 2011