Tell me a time when you had a Blonde Moment or felt embarred?

When I was leaving out the computer lab at school, i decided to turn back around because I seen this woman who smeared some of the black mascara around her eyes on her forehead. I didn't want to embarr her so I just whispered it to her. But she responded back loud enough for everyone else to hear her, "it's not make up, its ash wednesday" And the people around us looked up at us and I couldn't stop from laughing, i felt so dumb. lol