Would you be buried alive for 48hr for a million dollars?
You are buried in a coffin 6ft deep, with no light or cell phone. There is only a small tube connected to the coffin from outside that allows you to breathe (edit: you can breathe with no difficulty). After 48 hours, you are dug up and given 1 million dollars. Do you do it?
Edit: No food and water, no diaper, and no contact with the outside world. Once buried, they leave for 48hr and come back to dig you up. The coffin is only wide enough for you to lay on your back (no rolling around), and the inside is wood and not particularly comfortable. The only items you're allowed to bring with you are life sustaining medication (e.g. an asthma inhaler). No knocking yourself out with pills or anxiety meds. The money is a briefcase full of cash.
You definitely couldn't produce enough urine to fill the coffin. You would definitely end up lying in piss but that's not too bad for a million, plus it may drain out the bottom.
OP said no diaper, which means you are pissing and shitting yourself, and you'll be soaking in it at ground temperature, around 55f. Might be a tad uncomfortable, lol.