The sexual act similar to the "Eiffel Tower" in which one female is penetrated from the mouth, vagina, and anus from 3 other men. The Bermuda Triangle can be performed from a number of positions, but the most common is a doggy-style like position with one man behind and one man underneath.
Dude, last night Alex, John and I did a Bermuda Triangle on Brittney!
by Bermuda Triangle Survivor July 12, 2011
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A sex act where a lady is simultaneously pleasured by three men and is never seen or heard from again.
"Hey Jeff and Phil! Want to join me in taking Sheila to the Bermuda Triangle?"

"Oh man, I though you'd never ask!"

"I'm in!"
by MCprofK April 29, 2013
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An act involving three male partners which position themselves in a triangle in which things usually tend to mysteriously disappear within.
"Man, when Mike, Brett, and Matt were in the Bermuda Triangle it reminded me of one of those M.C. Escher paintings."
by Carpet Monster February 16, 2006
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a bitch with a real loose vagina and shes so stretched out that you might not make it out
by Stacy Goodcare March 21, 2008
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The small hole, shaped like a triangle located only under a woman's nice tight ass, in between her legs. Only noticeable at the precise moment when her thighs touch, creating a hole above the touching thighs, and under the ass, through which you can see in front of the lady in question. Some men are said to get lost there.
"Hey Tim, Sarah is wearing those tight yoga pants again, look at that Bermuda Triangle, you can see the photo booth from here."
by Cupcake 7137 January 16, 2013
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The sexual act of 3 men blowing each other simotaneously (in a triangular form) in a church parking lot, relatively close to a school.
Hey guys! After lunch you wanna head to our cars and have ourselves a Bermuda Triangle?
by Alpaca_breath August 10, 2016
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