The worst is when you wake up like six stops past your stop and now you gotta decide if you're gonna get off and wait for one going the other way, or just stay on the one you're on now until it turns around

I've had worse. I fainted on a train once.

No while I often fell asleep with my forehead bumping against the window I never used another passenger as my pillow.

Im not sure if it counts, but I feel asleep on the ferry from Catalina Island back to Long Beach Harbor. Riding on boats lulls me to sleep.

Many times. It happens some times, but I usually notice it before it gets too awkward.