The anus/bung hole that’s a little dirty and less than fresh. A little sweaty, mungy and ripe smelling.
Typically you don’t know your partner has a ripe ass until you go down on them for a little analingus and you pop back up after a couple of tongue punches to the fart box with the sour look on your face like you just sucked a lemon.
By the puckering of her lips, I could tell that Rachel just tongue punched my lemon ring. I ran for a quick shower to freshen up.