Absent mind.
I'm at the age now where i am getting very absent minded.the alarm goes off in the morning,i sit on the edge of the bed and slowly put my shoes and socks on before my trousers.
I shuffle to the bathroom and have a good long look in the mirror.then my brain engages and i remember i'm not in work at the moment.
I shuffle back to the bedroom,take off my wife's shoes and socks and crawl back into bed.