Have you seen any strange Ads about lately ? I can recall a sign outside Jessops the camera people in the late 70s saying ''Say Bolux to your camera supplier'' & a gents hairdresser who had a sign in his shop window saying '' hair cutting whilst you wait''. I have often seen '' Family Butchers ''& kept my family well away from there, & then of course there are Baby Changing Rooms which makes me wonder what's wrong with the baby you already have.
I saw a sign by the swimming pool shower "swimwear must always be worn". That was over a decade ago and it's getting ruddy itchy by now!
A sign in Sheffield used to advertise 'Stainless Steel Windows'. I can't think that they'd let much light in.
A carpet shop in Boston, Lincs had it's window display full of 3' wide carpet, 6' carpet, 9' wide carpet and 12' wide carpet, all priced per square yard. The name of the business, proudly displayed above that window, was 'The Metric Carpet Shop'.