This does happen to me. It's baffling, but good for a laugh sometimes, like this morning.
The mystery word that penetrated my brain before I even made it to the bathroom?
"Chilblains."
Really?
WTF is a chilblain and more importantly where the heck have I ever encountered such a word?
I looked it up. "Inflammation of hands and feet caused by exposure to cold and moisture."
OK. That's clearly a word I have a use for in East Texas. I think it's about 60 degrees out there now.
Thank you, Brain. CHILBLAINS!!