Have you ever walked in on someone having sex?

While they fucked?

Oh yes. I was edging waiting for my turn.

Doggy or missionary

Missionary. He got off I got on.

Did you grab her tits? Suck on her nipples? Fill her pussy with your cum?

She was still dressed. Skirt up knickers to one side. I gave her another pounding when we got home

Hmm I wouldn't say walk in on .. but I woke up and found me best friend having sex with my "adopted" sister on the floor next to my bed...

Did you get involved?

Yes... And I've been walked in on too. At one point while I was in college, it was almost a daily occurence.

Our dorms were organized so that in between two rooms, there was a common bathroom. We were 4 guys in these 2 rooms, all with (at least) one frequent sexual partner. So walking in your own room to find your roommate in the middle of sex was quite usual, and walking in the bathroom and finding one of the next door guys with a girl under the shower too. And by the third or fourth time it happened, those being walked in did not care to stop and hide anymore, just waving hello and sometimes talking with the "intruder" while carrying on with what they'd been doing as if it was the most normal thing.

At some point, the door to my own room got stuck closed, and was not fixed until the end of the year. So the guys next door got my roommate and me a key to their room. Which meant I had to go through their room and the common bathroom to get to mine. From then on, it's not walking in on someone having sex that became unusual...

EDIT: Thinking about this time reminded of a funny situation which I had not thought about since then...

One time, after I'd exited the shower, and was brushing my teeth, naked, one of the next-door guys poked his head through the door, asking me if I minded if he used the shower right now. I invited him in and he walked in with his new girlfriend, whom I had not met yet. She was fully nude. She walked up to me and kissed me on both cheeks while I must have looked like a dog foaming at the mouth. They both stepped in the shower and started to fuck while I finished brushing my teeth. I'd never brushed my teeth with a hard on (which wasn't morning glory) before...

No, but I've been walked in on haha

Can't say I walked in on it but I and my first wife was walked in on by my younger brother.

As a teenager, I walked in on my folks. They didn't think I would be home and their door was open. It really seemed ugly to me......lol.

yes

Well, "kinda". We were staying at a place which had a shared balcony with french doors from each suite leading to it. We were just walking along the balcony and the adjacent suite's doors were quite open and there was no doubt of the activity inside.

Yes my mum and uncle watched for some time as they didn't notice me went and masterbated in my room .

Yes I have, my son and daughter. The first time it was sort of hard to really see and except even though I had known they were together that way many times growing up and now that they live together as a couple.

lots of times in college

Have had someone walk in on me.

Yes. Quite a few times when I was younger and shared a house with other students. Not as often as I have had people catch me in the act though. LOL