Once had a delay on El Al- and a 12-hour flight to boot- my flight from Tel Aviv-Bangkok was delayed by 4 hours. I really had to go. I wouldn’t have seen this without the delay. So this is what happened:
I went to the bathroom half an hour into the delay. I opened the door to a stall, figuring no one was in there because feet weren’t showing. Whoops! There was a man-erm-you get it. I rushed into another stall, did my stuff, washed, went out, and laughed.