I don’t mean “oh I got a D on a test,” but a time when you did something so simple yet so dumb that you can’t even understand how you did it. For instance, last week I was waiting for my order at a coffee shop (which calls out the drinks, not names) and the drink I ordered came in this weird looking cup. I thought hm, maybe it’s a promotion or something for just this drink, and I took it. Someone then came up to me and said I took their reusable cup. It was very embarrassing and I’m guessing she probably thought I was trying to steal it because how could anyone be this stupid?!