Drunken Irishman

A drunk Irishman staggers into a Catholic Church, enters a confessional booth, sits down, but says nothing.
The Priest coughs a few times to get his attention, but the drunk continues to sit there.
Finally, the Priest pounds three times on the wall.
The drunk mumbles,
The Priest coughs a few times to get his attention, but the drunk continues to sit there.
Finally, the Priest pounds three times on the wall.
The drunk mumbles,
Spoiler: