The Italian Case

Luigi comes home after eighteen months abroad and is amazed to find his wife, Carlotta, has a three-week-old baby.
Carlotta explains that she dreamt she had sex with him and got pregnant.
Luigi sues for a divorce and in court; the judge is astounded by Carlotta’s story. The judge stands up and asks the audience if they ever had intercourse with a ghost.
In the back of the courtroom, Luigi’s grandfather raises his hand, and the judge calls him up to testify.
“Now-a,” says the judge, “you-say-a you had-a intercourse with a ghost?”
“Ah, scusa,” says the old Italian, “ I thought-a you say-a goat!”