bung-hole

A hole in a vessel, such as a cask, that may be stopped with a bung.

Pop a tap in the barrel's bung-hole so you can pour us a round of beer, innkeeper!

Cæsar's dust - or is it Alexander's? - may stop a bunghole, but the functions of these dead Cæsars of the past was to light up a savage fetish dance.

The anus.

So leave me... You never do have much margin there, but see if you can’t leave me about an inch from where the zipper [belches] ends around under my—back to my bung-hole.

I need TP for my bung-hole.

To have penetrative anal sex with.