Michael had cut his foot the day before, so the next morning when he kept favoring one foot and walking in a twisted sort of way and falling down, we were really worried. We finally grabbed him and as he wailed we looked at his feet, trying to find a splinter or a cut or anything. Nothing we could see was wrong.
Then Linda said "I wonder..." and took off his pants. She had put both his legs into the same hole of his diaper wrap. Whoops :)