Although strictly speaking, I lost it just outside a hotel room, having got up in the night for a wee, gone through the door into the hallway instead of the door into the bathroom, and realised just as the door closed behind me. Thus making me do the walk of shame down to the reception, in just a pair of pants.
I awoke once at about 10.30pm urinating into a bin in the hallway of my hotel in Denver after a long afternoon on the booze. Wearing just my boxers, and without my glasses. I had to myopically stagger into a lift and down to reception, which of course was bustling with other very amused hotel guests.