Was put under for minor surgery using propofol some 20 years ago. Doc started injecting the milky white goo into my IV, without so mucy as a hello, there was a clock in the room which seemed to slow down, I couldn't breathe or move or cry out and was sure I was dying.

Then I woke up in a recovery room, with zero awareness of anything that happened in between.

0/10, not an experience I'd recommend.