Top definition
It's a saying basically for someone to stop saying that someone is "stupid" because they are probably right behind him/her.
Like in the movie, The Lion King:

Ex - Zazu says ixnay on the oopid-stay, to warn them to stop calling the hyenas stupid because they are right behind them listening. (He just says it in pig latin.)

by Kourtnei August 07, 2006
Get the mug
Get a Ixnay on the oopid-stay mug for your guy Paul.