A Threesome involving 2 girls and a guy. The guy lies on his back while girl A rides his dick and girl B rides his face while both girls kiss, thus completing a triangle. Girl A can also be flipped around so girl B eats Girl A’s pussy while girl A give the Guy a blowjob but this is very physically exerting and not for amateurs.
Bill: I saw you take those two coeds into the bedroom at the party last night.

Dylan: yeah I got them to preform a Thomas Triangle on me before I squeezed my go-gurt all over them
by Donkey96Nuts December 6, 2022
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A nickname for the Bermuda Triangle. Or an actual fucking drinking game. Modern definition has apparently been changed to a threesome with 2 men and 1 woman. Tbh I don't know what's going on anymore in this world.
Example 1:
Frat Boy: Hey bro, wanna play Devil's Triangle?
Random Feminist: You're perpetuating rape culture!
Frat Boy: I just wanna get drunk...
Example 2:
Guy: Hey did you watch the new documentary on the Devil's Triangle?
Random Feminist: You're perpetuating rape culture!
Guy: I just wanted to learn about the Bermuda Triangle...
by Just-That-Guy-Bro July 22, 2021
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A natural patch of pubic hair. The Devil's triangle runs from the bottom of the waist to the start of the grundle; in other words, it's the part of the crotch that is visible during normal intercourse.
I love your Devil's Triangle.
by AtlanticComputer October 11, 2020
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A term for a three way with 2 men and 1 woman that couldn't possibly be a game or anything else becuase words only mean one thing.
Can also be a metaphor for people believing what they want to be true.
Regular person: Have you played that strategy board game Devil's Triangle?
Partisan autist: No that can't possible be a game because it's already a sexual practice.
by SneakersO'Toole November 20, 2020
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A drinking game played at parties by 2 men, in which three cups are arranged in a triangle and filled with beer. (Players must like beer.)

One player flips a quarter while the other calls heads or tails. The three drinks are then roofied and handed out to female party-goers. Players then simultaneously rape the first woman to pass out. The coin flip determines who takes anal.

At the moment of climax, players give each other a high five and maybe hold hands there for a bit (optional). Technically the rule is that players cannot make eye contact during intercourse but we all know they do it anyway.

Pretty gay imo
"After working out with PJ and Squee, Brett and Mark went to a party and engaged in a game of Devils Triangle."

"I can't believe you bragged about having a Devils Triangle in your yearbook bro! Everyone's talking about what a homo you are."

"The 'honorable' Judge Brett Kavanaugh perjured himself a bit when questioned about the Devils Triangle. Just a bit though imo."
by Rey (pseudonym) October 2, 2022
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When 2 buddies and 2 girls from Thailand engage in a sexual act where one girl jerks off one buddy while playing with the second buddy's balls. The second girl jerks off the second buddy while playing with the first buddy's balls. Also know as a Two-Handed-Nancy.
Dude last night my buddy and I had these two girls up in our hotel suite, things got crazy and we ended up getting a Bangkok Triangle.
by Same Same But Different December 25, 2016
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When a woman is surround by three dicks.
Carrie was curious about what a dick triangle was. She got more than she bargained for.
by Next door shaman January 17, 2022
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