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A person who inserts gerbils or other small rodents into his or her rectum for sexual gratification. Gerbil fuckers are often, though not always, homosexual males.
Which one of you sick gerbil fuckers stole my pet hamster?

When the ER doctor retrieved the lifeless wet clump of fur from Richard Gere's rectum, his suspicions were confirmed-- Gere was indeed a gerbil fucker.
by RVDestroyer69 February 08, 2008
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