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1. The act of a man inserting his penis into a womans ass. Not to be confused with gay butt sex.

2. (Rare) The act of a woman inserting a dildo into a man's ass. This is considered to be a form of gay butt sex in some circles.
1. Harry was tired of Sarah's loose vagina so he decided to stick it in her butt for some straight butt sex.

2. Sarah rammed the 10 inch blue dildo up Harry's ass for some straight butt sex that some would consider kinda gay.
by Harry Zonka August 31, 2008