One of the things that physicians have men with erectile problems do is the 'stamp' test.

You get a strip of perforated stamps (the kind that need to be licked in order to stick) and you attach them snugly around your flaccid shaft before you go to sleep.

When you awaken in the morning, if the band of stamps has broken, you apparently have no trouble getting erect while asleep. This is a confirmation that your erection difficulties may not be due to a physical problem.

Pecker

Ah, the patter of little feet around the hosue. There's nothing like having a dwarf for a butler.