I can fall asleep almost anywhere. I routinely fall asleep in the break room at work. Once, I was helping a friend fix his car, and I fell asleep on his garage floor when he went inside to get water.
But in a hot metal tube tearing through the sky, with my neck all kinked? Get out of here, man.
If I have a partner to travel with me, I can sleep by holding their hand and leaning on them or by laying on their lap.
I have also slept on semi-strangers lap once… I’ll give some context… We all were apart of an event … Staff all knew who everyone was, so there was some implicit trust amongst us peers. As a result, I figured I’d ask this one person I was sitting with to hold their hand. The person later asked if I was tired & invited me to lay on their lap, so I could sleep. In any other travel, asking strangers to do such thing could have larger risks obviously.
A soldier fell asleep on my arm on a flight. I figured he needed the sleep and let him.
Awww that was sweet of you