One time, I woke up and put the jeans that I had worn the day before, back on. I walked over to the full length mirror, and screamed, and then collapsed on the floor. I yelled "I've dislocated my knee!!" in panic and braced myself for the pain. Except there was no pain and it was not my bone sticking out. It was a sock still in my trouser leg from the day before. Mum came rushing up stairs in fear. Wow. Awkward.