When you're halfway thru a packed 12 hour flight in economy, a park bench will seem like a 5 star hotel! You'd curl up on the cabin floor if they let you, or beg the flight attendand to zap you with a taser to knock you out.

Sleeping on the floor sounds better. That’s what my mate apparently does if it’s only 2 passengers.

You need to be on fairly bad airline tho where stewardess don’t care.