Qed

[Donald Trump]

An abbreviation of the Latin phrase quod erat demonstrandum. It literally translates as which was to be demonstrated, and is a formal way of ending a mathematical, logical or physical proof. Its purpose is to alert the reader that the immediately previous statement, which naturally was arrived at by an unbroken chain of logic, was the original statement that we were trying to prove.

[Rihanna]

Originally Latin meaning quod erat demonstrandum or which was to be shown or proven, now used mainly by physics students to insult someone when something is proven wrong or false, typically with the words Mother Fucker added for effect.

[Tanya Shivari]

From the Latin quod erat demonstrandum, a mathematical term meaning that a proof is complete.

A mathematicians way of saying OH SNAP BITCH!

[Raeanne Dimick]

Mathematical jargon for Booyah!