what have you done that someone would think you are CRAZY?

Tonight I flushed the cooling system on my Prowler. After getting the antifreeze and then the chemical flush all over the aluminum frame and R&P, figured I should wash it off. With the car on the lift I got the soapy bucket of water and hose out to wash it off.

Then after spraying it down and all the water dripping off everything and not wanting to get completely soaked (had to drive the car home and didn't have change of clothes) I put my long rain coat on and got under the car and started washing the area that got the splash and spray from changing the coolant and the flush.

I was thinking how stupid that must have looked and glad no one was there. Then thinking, I'm not the only one that must have done something that to a non car guy would think was odd.

So what have you done that a non car person would think was dumb or odd?