up one's own ass

Meanings:

• 1.

  USUKgeneralvulgarinformal
  • Excessively self‑absorbed, arrogant, or preoccupied with oneself to the point of being insensitive or oblivious to others.

• 2.

  USUKgeneralvulgarinformal
  • Behaving in a manner that is obstructive or narrowly self‑interested, often causing poor judgment or an inability to see obvious facts.