[VivianParker]

So, this actually did happen today, about an hour ago.

For a bit of context, due to personal circumstances I (27M) have recently moved in with my MIL and SO (27F) of 4 years and we are all sharing a flat.

With that out of the way, buckle in. Today we decided to go at it - my MIL was going out for lunch, and it seemed like the perfect opportunity, as our rooms are pretty close and it's hard to have some intimacy otherwise.

We knew she was away because her room was open and no one was in, so we decided to take the chance and experiment a bit: We did anal and where pretty loud. Ass-slapping, heavy moaning loud. I am usually quiet, but even I decided to let go and was pretty loud during the whole thing.

After the deed was done, we decided to shower together while we commented it. We like to state which things we liked and even crack some jokes, so that's what we did. We were, once again, pretty explicit and loud, to the point she kind of yelled at me (while standing in front of my MIL's room) I had come like a garden hose, because fuck it all, we were having a laugh and alone after all.

After coming out of the shower, I saw my MIL's room was closed, which kind of alarmed me, but I thought it was my SO's doing. So I jokingly -and loudly- asked her: "Have you checked if your mother is home? Can you imagine if she was?". My SO darts out of the room and comes back pale as a ghost. Her mother WAS in her room. Which, mind you, is across the bathroom and frigging beside ours.

When did she come back? Was it while we were loudly fucking, was it during the shower, was she always there? We do not know and that makes it all the worse.

TL;DR: LOUDLY went at it with my SO thinking her mother was away. She wasn't. Send help.