What stupid things have you done?

Right after I painted my dart I decided to do the headliner. The bows in the back were kind of hard to get in so I decided to roll down the back window and slide it in throught the window. Towards the end of the procedure I had to twist and turn the bow to get it to slide all the way through. Needless to say the end sticking out the window was twisting and turning on the clear coat......pissed me off to no end. I think I slapped myself too:)