Often over the years I've woken up in the morning and feeling like crap. Literally dead on my feet. I say that to someone in the house and they inevitably say I've been banging around and doing stuff the whole night.
The worst thing to date is waking up outside of my apartment building when I lived in the north of England. I was in my undies and it was minus 5 or something. I somehow got into the lobby but the lift wouldn't work. I had to ring the security company on the little phone in the elevator. They turned up with a blanket and a hot chocolate 5 minutes later. They said, "you're not the first and won't be the last..."