Not that crazy but I had a couples massage on a cruise once. I happened to get a cute little Asian/Indian mixed masseuse so she already had me a little worked up before it started.

Since my SO was right next to me I left me boxers on even though I wanted to go nude in case I got a chance to show off my cock (pics on my profile if you’re curious).

The buildup to her working down close to my crotch had me rock hard to the point I was throbbing and over half of my shaft was outside the leg of my boxers and I’m pretty sure I was leaking precum.

At the point when she was adjusting my towel I could tell I was exposed. I’m guessing I had a veiny 4 or 5 inches of shaft hanging out and she could probably tell there was a decent amount more she couldn’t see ( I’m 6 inches thick for reference).

That was when I heard her try and whisper “Good lord!” But I think it was louder than she realized.

I felt her brush it with her hands a few times after that but the whole thing was pretty validating considering she’s probably seen a ton of dicks and I got a pretty good reaction from her.