I don't have pictures, but 2 signs that always make me smile are "Humped Zebra Crossing" (i suppose a zebra that has been humped will be crossing slower than a none humped one) and "Drive Slowly Children" (why are children driving, and are adults allowed to drive fast?). Another, that I don't so much find funny, but do have a strange interpretation of is the increasingly common no unatherised entry sign with a man holding up the black palm of his hand. I always think it's like the man is saying "you want entry, talk to the hand!".