Haha...

A lady bought the adjacent shop to extend the place for her beauty parlour. Extension wasn't that hard, connected wall was broken and the space was decorated with the matching furniture and other accessories necessary for a beauty parlour. She already had the customers. Business kept going as usual. She didn't think it necessary to charge the name and other details written outside.

Previous owner was a door supplier. One of the highlights written on the front was, ”It is not a secret, we provide the best back doors in all shapes and sizes".

Yours is hilarious though. (This line is about your joke)