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Like an astronaut, but a gerbil going "where no gerbil has gone before". See gerbilling
It soon became clear to Richard's gerbil that he would soon become a gerbilnaut.
by Solly Jim November 27, 2008
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Slang reference to the Juggernaut perk in the game Call of Duty 4. The meaning implied is that the Juggernaut (perk & user) is homosexual/gay.

Player: Ahh, sh*t! I just got killed by that same faggot again!

Friend: Which one?

Player: The guy with damn Gerbilnaut!
by Mr. ASDF May 28, 2008
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