I’d be mortified if someone walked in on me having sex. I don’t really like to see other people doing it, and I certainly don’t want anyone I’m not doing it with to see me. It’s private.
Pooping, though, is not a big deal at all. I’ve done it in front of friends and family many times, don’t care if other people smell or hear me doing it, so I wouldn’t care that much if someone walked in and saw me sitting on the toilet and doing it. Not that I don’t take care to lock the door every time.
Many years ago when I was about 18 I was with my girlfriend in her room and she was, well, let’s just say I was having a really good evening. And in walks her 7 year old little brother without knocking on the door first as little boys will sometimes do. He freaked, she freaked, I didn’t have such a good evening anymore… Not a good time.
Yep, I thought this was about the impossibility of doing anything without cats thinking they could just walk in and all over you. Incidentally, once, during a somewhat prolonged dump one of my cats decided my knickers made a neat little hammock to curl up and go to sleep in.
I grew up in a house with five people and one bathroom. Being walked in on while dumping was SOP (if you had to brush your teeth or shave or something, you just ignored the person on the toilet, but I barged in on my parents early one morning and there they were humping away. It was enormous embarrassment all around. Not even close.
My college roommates often had sex with me in the room and vice versa. It wasn’t a porn show. We just promised to be discrete and I wasn’t leaving the room to go find someplace else to hang out just so they could screw. It never seemed to an issue back then. I could get some decent sleep or at least some class reading in as long as they weren’t too loud. Funny how norms change temporarily in college but the same thing happened in high school too. I am not sure I would do that now but I wouldn’t rule it out depending on the circumstances.
I don’t like seeing people take a big dump though and catching someone masturbating is always embarrassing to all parties.
During sex is worse, because I don’t have to explain to my 5-year old what I’m doing on the toilet but I would have to explain what I was doing on Mommy.
The OP says to invent whatever convoluted hypothetical you need to to arrange for the situation. The main question is what is a more personal/embarrassing never-want-someone*-to-see-you event: sex, or pooping. For me it’s pooping.
*and since so many people have different rules for family members, I wanted to eliminate those from consideration.
If I’m pooping at work, I’m most likely in the restroom in the stall, and some guy broke the stall door down. Uncomfortable, possibly scary, but I could live with it.
If I’m having sex at work, it’s most likely in my office, which has a door that locks. I’m wondering why my coworker has a key to my office, but I figure I’m fired. And I’m going to have to explain why to my family.
So sex.
If I’m pooping at home and a coworker walks into my bathroom while I’m there, then I probably invited them over. They’re the one who should be embarassed by walking in on me. I do have a lock on the door, but I’ve never used it.
If I’m having sex at home, it’s really unlikely that I’ve invited a coworker over to watch, so the coworker broke in. I’m pissed and calling the cops. If the coworker is my boss, and my lover is his daughter, then I’m embarassed, pissed, scared, and likely unemployed.
You’re not really answering in the spirit of the question. You’re answering in the “what caused the hypothetical, and what are the ramifications of THAT” way. I am asking about which is more embarrassing, having someone walk in and see you pooping or having someone walk in and see you having sex. Not what the scenario means for the future or whether someone broke into your house, or whatever. The question is solely about having someone you’re not intimate with see you doing one of those two things, and which is more embarrassing for you.