How do I get out again?

The scenario:

Middle of the night, get up and go to what could be the side door of the ambulance if I were in an ambulance. Spend about 30-60 seconds fumbling around, feeling the wall, trying to find the door latch in the dark. Mind kicks in and tells me to try the back door, where my actual bedroom door is and where the back ambulance door would be. Get into the room next to my bedroom, still in the dark, half fuzzy walk like a zombie to the loo to void ye olde bladder.

Walking back, wondering where my brain was. Obviously in a mid-dream state.

Weird. Never had anything like that happen before. My brow is furrowed, lips pursed, and am half glad I'm single as to not have to explain to someone else how much of an idiot I am :D