All my most embarrassing moments involve me falling.
I fell at church once right when I was walking in. My stuff in my bag flew out. People laughed. Another time, I fell off a chair in a library.
The worst one that doesn't involve me falling is when I sent my boss an email meant for my husband. Had to run over there and ask him to delete it. Oops! It had nothing bad, I was just whining about the long meeting we just had and how my neck was hurting from looking up at the screen.