Friend masturbating: If I caught a lady friend masturbating and she noticed, she'd either be A) upset or B) cool with it. If she was upset, I'd apologize, maybe say I didn't know she was "busy". Wouldn't find that very hot, really. I'd feel bad I upset my friend. If she was ok with me running in on her, I'd probably be in a slight state of shock. I'd probably end up watching and I'd probably become very horny, to boot. Dunno if I'd masturbate, myself, but I'd watch intently. A relative masturbating: Not appealing, thank you. I wouldn't find that sexy in the least. I'd probably leave the room as soon as possible. Friends (couples) having sex: See myself out and visit them later. Dunno if I'd mention it to them if they didn't notice.....being my friends, they'd probably understand that accidents happen and we'd probably joke about it later. If they did, I'd apologize and again, talk to them later. They'd respect my privacy, so I respect theirs. Would not masturbate at said scenario or "join in". A stranger masturbating: If it was male, I'd probably wanna puke.....instead, I'd just see myself away...................FAR away. On the flip-side, if it was a female I "caught", I'd probably get some wood, yeah, but I'd behave myself and not "join in". Would tell her to please excuse me if she noticed. If she didn't notice me, I'd just head away from her and let her jill in peace. Strangers (couples) having sex: If I somehow, someway caught two people I didn't know fucking, I'd probably get wide eyed, excuse myself (if they noticed) and walk off......................walk off very briskly, that is. I don't find a guy sticking his rod in a lady's coochie very appealing to watch. Only time I enjoy sex is when it's happening to me.
I hit 'em all. The only prob would be relatives. Cousins or nephew/nieces would be a turnon. (I've done a couple of cousins anyhow). Guess I'm easily turned on.
All of the above-mentioned things surely would make me horny enough. And I would join in if I caught...
Yeah - the question is unclear but the answers coming trhough are clear enough - everyone just wants to wank!