You know the expression. It's one of those occasions where you open your mouth before putting your brain into gear. We've all had them.

One of mine was not long ago.
Hubby and i were going into the city to do the shopping. It was raining heavily at the time. When i suddenly blurt out "what a waste of electricity" my hubby replies "what is?". I reply "having the Cats Eyes on the road ON when its daylight"
Of course, he was driving with the car headlights on.

Right. It's your turn now.