Quadrangle is an aggressive sexual act whereby the "catcher" is so viciously dominated by the "pitcher", they are forced to walk home in the star-fished position or the quadrangle with arms and legs extended obliquely.
My friends bet me a Vanilla Coke I couldn't quadrangle a self-respecting person but my camera phone provided evidence to the contrary
by magicmikeyd September 13, 2010
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A love triangle involving four people instead of three.
1: So I'm in this love triangle, but there's four people instead of three.
2: That's a quadrangle!
by princessinvt November 18, 2011
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Quadrangle. Quadr- meaning four and -angle meaning angles or sides.

like a square except much cooler.
Children, put down those quadrangular cards and eat your damn broccoli
by Kir December 6, 2004
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A person falling in love with another, however that “other” likes someone’s who isn’t them. Which that person likes another person. And yet that person has a crush on someone else, which that someone else happens to like the first person. Be prepared, unexpected summer crushes could ruin a party if not handled carefully.
“It turns out my matchmaking skills turned this into a love Quadrangle!”
by SHorseOof June 29, 2018
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