was he a good boy?

A newly married sailor was informed by the Navy that he was going to be stationed a long way from home on a remote island in the Pacific for a year. A few weeks after he got there he began to miss his new wife, so he wrote her a letter.
"My love," he wrote, "we are going to be apart for a very long time. Already I'm starting to miss you and there's really not much to do here in the evenings. Besides that, we're constantly surrounded by young attractive native girls. Do you think if I had a hobby of some kind I would not be tempted? "
So his wife sent him back a harmonica saying, "Why don't you learn to play this?"
Eventually his tour of duty came to an end and he rushed back to his wife. "Darling" he said, "I can't wait to get into bed with you!"
She kissed him and said, "First, let's see you play that harmonica."