Y.O.T.T.

You're One To Talk.

Meaning you're being hypocritical, same as saying "look who's talking"

Like the pot calling the kettle black.

Bigot Number 1: Hahaha! You have a small brain.
Bigot Number 2: ...haha...Y.O.T.T. you stupid hypocrite!...

Your One To Talk
meaning your being hypcritical, same as saying "look whos talking"

Asian Guy One: Hahaha you have a small penis.
Asian Guy Two: ...haha...Y.O.T.T. fucker...