To be savgely attacked.To be beaten like a fat perverts meat. i.e. fast and relentlously
Stevey thought he was rollin deep til he got triangled by some big fuck off mandems.
by Checker May 23, 2005
To be cock blocked by a girls friend. ie when there is 3 of you out or you cant get them on their own.
Richard was triangled numerous times in the week.
by Gregory Flanagan December 20, 2009