Top Definition
1) A person whose rectum is worn out and distended from overuse due to rough or frequent anal sex. So-called because having sex with them is like thrusting into a bucket.
2) Gay male slang for a promiscuous person, their equivalent of a 'slut'.
Gary is going out with a biker pack? What a cheap little thrustbucket!
by MAC-Gyver June 02, 2003
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