.....You suddenly remember something that you do not want to remember again for the rest of your life and you cringe/shout at yourself in public? I cringe a lot, but I never shouted at myself for my stupidness....yet.....
I stare off into space a lot due to memories of past mishaps. You'd be amazed the looks you get when you stare at a wall for five minutes without blinking in public. -Nights
I tend to make aggravated noises at myself and then attempt to distract myself normally with little effect.