I once fucked a girl raw in a bar bathroom, in both per pussy and her ass. It's was stupidly risky, and she was clearly off her face on drugs, but she was horny as fuck.

She was in crazy high heels and started to fall down a narrow staircase as I was passing her walking up. I caught her, half-carried her to a couch, got her some water and stayed with her until we were sure she could walk on the ankle she'd twisted when she fell.

I then walked around with her trying to find her friends, but instead we ended up in a fairly uncrowded part of the bar/pub/hotel's basement, where there was a single person bathroom slightly hidden in a corner. In retrospect, it's clear she knew about the secluded bathroom and had used it before.

We ended up kissing, then I had my hand under her skirt and my fingers inside her pussy, then her pussy and her ass, then she dragged me into the bathroom. And then we fucked like idiots. She was so wet, and her ass opened up so easily, it was one of the few times I've ever been able to sodomise a woman with just her pussy juice as lube. I came in her ass and then, and this was the first time this had ever happened to me, she dropped to her knees and licked and sucked me clean. I was blown away by how filthy she was - I think she was also the first person to ever tongue my ass.

Then we found her friends and she thanked me and flounced off. She had given me "her" number, but it was a fake (a pizza restaurant, IIRC). I never saw her again.

The next day I had an STI panic and rushed to get tested, but luckily I dodged a bullet and was totally clean.