Sitting behind a van earlier, he had a sign in the window that read 'No tools left in van overnight'. Yup, that'll do the trick, I suppose the thief will just move along until he finds one that say 'Tools in van, please help yourself'.
'Princess On Board'. Yeh? And? Oh I see, and there was me going to deliberately crash in to your car too. I had to get really close just to read it so it's even sillier.
I passed a house with a door knocker and a sign that read 'Please knock'. So I did, "What do you want?" "Oh nothing, just passing"
And in Marks & Spencer, "Dogs must be carried on escalator". Took me bloody ages to find one. Ridiculous.