Clean her ass with you tongue

She picks you and stands you up and then lies on her stomach so her ass is sticking up.

"****, clean my ass," she demanded looking at you with lustful eyes.

You start to look around for a rag or towel to find something to wipe her ass.

"Uhhh **** you have a tongue use it," your mistress said get madder.

You walk over to your mistress and look at her mASSive ass, it could easily cover your head.

"**** I'm waiting," she said getting furious.

You know how strong she is so you don't want to make her mad. You start on the left cheek, it tasted rancid, it was rotten and sweaty. But you don't know what she will do if you mess up.

You start to lick around, liking up more sweat and getting a soft moan from your misstress, you then go to the right cheek and it tasted just as bad as the other one. Giving another soft moan she went back to relaxing.

You finished with her right cheek and backed up, retreating licking her ass checks you then realizes what you have to do next. You stare down her dark cavern, it looks like their should be a hazard symbol on it.