used to define certain peoples looks or even their stupidity. This phrase was originally coined by the urban legend, Will Guess.

also refered as squirtle Head
He/She is a classic Gerbal Head.
by Kevin Maurer May 10, 2006
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a plastic or stainless steel tube that two rump rangers simultaneously stick up their asses an allow an entrapped gerbal two run about inside tickleling their rrctums.
Richard Gere was once caught on Fire Island with a gerbal tube jammed up his ass.
by Moe Foe April 14, 2005
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One who lubes up their rectum then takes a paper towel tube and slightly shoves it up their ass and then lets a gerbal in the tube and has it crawl around the tube and up your pie hole.
After Ned bought a new gerbal and stripped the toilet paper off the tube we all suspected he was a gerbal hider.
by Mike O'Malley May 22, 2003
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A male homosexual who plays the role of the pitcher during anal sex.
Richie enjoys the feeling of gerbals tickling his rectum. Spencer, his partner, likes to f*ck that rectum. He's a gerbal chaser.
by Time4SumAksion June 7, 2005
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richard gere is a gerbal smuggler

seth hedstrom smuggles gerbels
by chubbs onapa August 17, 2012
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Anytime a person seeks out a much young person just to fuck them. Someone at least 10yrs younger, but legal, hence the "Trapping". the opposite of Cougar.
John went "Gerbal Trapping" at the mall today with his 30yr old cousin.

John went back to college for his 10yr alumini weekend and hit all the bars "Gerbal Trappin" with his fraternity boys.
by the polock September 25, 2009
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