A butt is in your face

You get a view of some buttcheeks in front of you but before you can figure out whether it is a woman or a man, you're shoved into the crevice.

With no time to react, and with all the debauchery that has been going on, you just start rimming the person.

Shakily, you reach up between the person's legs and find a pussy. You start rubbing their clit as you continue stabbing your tongue into them. Very soon, you have most of your tongue inside them and a thumb in their pussy.

Most of the room is quiet, bar a few whispers, so you can hear this woman moan. From what you can tell she is getting close, so you continue your attentions on both her lower holes.

She grips the wrist of your hand on sex, forcing you to stop. Her other hand grabs a fistful of your hair. Her whole body goes rigid, apart from her thighs that start trembling. She releases a low moan.

Then the two of you part ways, you fall back and try and catch your breath.