For a while we had several CH-47A's that experienced a main rotor blade rotating 90 degrees in the cuff with an immediate disintegration of the aircraft.
I do not care to think what that ride would be like.....except hopefully the G forces of the aircraft coming apart would render you unconscious and you could then go in your sleep.
Not much use in cinching up the old seatbelt in that situation as there would not be anything to cinch to.
I used to have a nightmare where I found myself strapped in the seat...cyclic and collective in hand....and nothing else around but the clear blue sky.
Reckon it was the Anchovie Pizza's?