Electician

Most people are shocked when they find out...
...how incompetent I am as an electrician.

No Parking

This particular Wizard worked in a modern factory. Everything was satisfactory except that certain miscreants took advantage of his good nature, and would steal his parking spot. This continued until he put up the following effective sign: This parking space belongs to the Wizard.... Violators will be toad!

Old Plumbers

OLD PLUMBERS never die, they just go down the drain