I don't know if this counts, but I fell asleep while watching some boring ass clips of some guy talking about his chiropractic practice on YouTube once.
Have you ever tried to say "chiropractic practice" 10 times fast?
No, but I went out on the balcony in just a shirt with no underwear. I didn't consider that the railing only came up about half way to my thighs....my neighbour from across the road told me eventually.
Have you ever had toilet paper stuck on your shoe/in your pants and went out in public without realising it?