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 April 24, 2016
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Up your own ass

Constantly refers themself as being amazing at something
by Magic carpet June 10, 2017
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up my own ass

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
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