I washed my car yesterday--okay, I rinsed it--and while I was there I stepped on a screw!
It went through my sneaker, but barely pricked my skin, so I'm not worried about lockjaw or anything, but OUCH! I looked around and it was a veritable hardware store of loose screws in that bay. A pick-up truck had been washing in there previously, so I'm betting they came from him. I picked them up and tossed them out. Kids were running around, after all.
Nothing ruins a clever sign like the incorrect use of the subjunctive mood. Or is it just me.