A phrase coined by American heavy metal band Pantera in the 1992 track " Regular People. " This phrase simply means a person has their head so far entrenched in their anal cavity that they cannot see the obvious in front of them.

Can be used in any tense past or present.
"Hey dickhead! You can't see because your heads up your ass!"
Wow, you fucking cunt. You can't see because your heads up your ass."
by Microhard726 August 4, 2020