how to say No u in a fucking smartass way

Anatidaephobia is defined as a pervasive, irrational fear that one is being watched by a duck. The anatidaephobic individual fears that no matter where they are or what they are doing, a duck watches.

Anatidaephobia is derived from the Greek word "anatidae", meaning ducks, geese or swans and "phobos" meaning fear.

N. A very smart and intellectual comeback to the feared and dreaded Ur mom gay

Quite often used to counter a mom gae (or similar)
This is the most ultimate version of NO U, after this it moves on to uno cards
OR Gru reverse memes
Only smarty bois can use this