I'm such a dummy sometimes:
First I gave my friend my key to check our mail while we were gone last weekend. I told her to leave it in the apartment, not remembering that I would be traveling alone back to the apartment (with FI coming back the next day). I realized this at 12:30am while driving home Monday night. Our landlady (who lives upstairs) was out of town and so I had to call the same friend at 1:30am asking if I could crash at her place for the night. Then I had to wear dirty clothes all day yesterday.
Second, I just realized that I ordered twice as many STD magnets as I needed, since I have put two of them on each magnet. I now will have 400 STD magnets. Anybody want one?
What's a dumb thing that you have done recently?