What's the last dumb thing you've done?

I was going to go to the store today. I got in my car, put it in reverse and it did not move. I had this happen last year. Last year, a piece broke off that prevented my car from going in reverse. So, I assumed that the same piece had broken again. I called my mechanic to come look at it tomorrow.

I got in my car later to try again. Turns out I had forgotten to put down my emergency brake🤦🏾