Joke

At a big cocktail party, an obstetrician's wife noticed another guest, a big, oversexed blonde, was making overtures at her husband. But it was a large, informal gathering, so she tried to laugh it off, until she saw them disappear into a bedroom together.

At once she rushed into the room, pulled the two apart and screamed, "Look, lady! My husband just delivers babies, he doesn't INSTALL them!"