trapezium 

The most interesting quadrilateral. It has four sides and looks cool it is savage because it has no parallel sides.

Oh wow, your shoes are totally trapezium.

trapezium by PSEUDONYMS ARE LAME POOPYS April 24, 2021

trapezium 

Mutual oral sex with four participants. One participant must be considerably taller than the others to obtain the correct shape. Works best with four guys.

Sam: Hey Josh! Wanna form a trapezium with me Jonny and Joe tonight?
Josh: Yeah sure!

trapezium by TheGoonMeisterFnar May 5, 2014

Trapezium flick 

A trapezium flick is one of the most uckiest flicks in rocket league where you proceed to uck the opposition and double jump backlip and end up in the bottom corner

Sexy man : I like the trapezium flick
Other sexy man :yes I like

Trapezium flick by Extremely ucky man September 25, 2021

Trumpezium 

An obese- or obscene-looking quadrilateral with zero parallel sides—also known as “trumpezoid” in the Commonwealth countries.

What Americans call a trumpezium, the British call a trumpezoid, and vice versa.

Trumpezium by MathPlus September 19, 2020