It happened to me once. The guy next to me was spreading too much that I pushed back. I was a bit angry that he crossed into my space. We were leg touching the entire flight. We were both wearing shorts.
Maybe he was trying to get something across
 
A few years ago on an overnight transatlantic flight, a college-age Euro dude in skin tight jeans was in the window seat next to me. The flight attendants were generous with the drinks (beer for him, wine for me) and after four or five we were pretty mellow. As we reclined after the meal and spread out to sleep our legs found each other and stayed connected for the rest of the flight. I was hard af and it looked like he was too, but it didn't go any farther.

Ever since I've made it a point to manspread when sitting next to a good looking guy, and usually get at least a bit of touching in return.
 
https://thisvid.com/videos/foot-plane/

This vid is pretty much what many of us think it could happen when a passenger’s legs are in contact with ours.

I’d say most of the times that idea stays in our heads ;)
 
What was the outcome on this? did the bro next to you chub up in his jeans? Did you give him a look at your big meat?
Na, he just caught an eyeful of my bulge when I was getting into my seat.
 
Cramped airport shuttle bus. Keep catching eyes with the guy opposite as in such close proximity. Hopefully seated together haha
That leg is very much attached to yours.. sadly those shuttles are short rides. Any stories from your flight?
 
That leg is very much attached to yours.. sadly those shuttles are short rides. Any stories from your flight?
Unfortunately not which is a shame as it was early morning and I was horny af. I had an aisle seat beside a clingy couple. The woman was closest to me and they held hands pretty much throughout… onto the next one!
 
Seems to happen frequently but only once with a guy I was attracted to. I had the window. This college guy sits in the middle. We chat just a little. We’re both wearing shorts. Mid flight, I spread my legs a little and lightly touch his leg. He doesn’t move it. I’ll get something in my backpack and have to press hard against his leg. He’ll get something from his bag and press hard against my leg. Every now and then I’d adjust my leg and rub against his. He never moved it away. I so badly wanted to touch his thigh with my hand but didn’t dare. I was hard practically the whole flight, but my tshirt was covering my tented shorts. When we landed I was hoping to see more, maybe see his dick at a urinal or something, and he never went down to baggage claim. I did have to jack off though before I left the airport thinking about him.