So this morning I stubbed my big toe. Quite hard. Once I cleaned away the resulting bloody mess, I see that my toenail is kind of half in / half out. My doctor helpfully offered the opinion that it must "hurt a lot" and when pressed as to how long it might take the nail to fall off, remarked "How long is a piece of string?"
Anybody else with or without years of medical training care to give me an estimate, maybe from personal experience?