The title speaks for it's self, so basically put down a moment where you have all of a sudden realized you were doing something stupid/funny.
I'll put down some of mine:
1. Waking up and going to poor cereal into a cup that I had lemonade in xD
2. Getting my pet parrot some fruit but keep eating the fruit before I put it in her bowl
3. Calling my sisters the wrong names even though I can easily tell them apart (They're twins)
4. Completely forgot what I'm talking about mid sentence