up their own ass

Being excessively proud of oneself. Basically when someone thinks their shit doesn't stink.

That Oprah woman is up their own ass.

by Sploon January 13, 2016

Up your own ass

Constantly refers themself as being amazing at something

Keith, your're up your own ass all the time.

by Magic carpet June 10, 2017

up my own ass

Robert

Robert who passes GCSE'S but can't get it right in real life.

up my own ass is something Robert would say, and that's gay

by sirbennito July 23, 2021