Two instances. The first time, I hit it off with a woman I was sitting next to and one thing led to another and she gave me a hand job under a blanket. The second time, I was traveling with my girlfriend at the time and it was planned because I didn’t know if the handjob counted.
I went to the bathroom and she followed a few minutes later. We did what we did and left one at a time. If somebody was waiting outside, the plan was for her to open the door and politely ask them for space and tell them that I was feeling very dizzy and was not steady on my feet before she would help me back to our seats.