Captain Jack Says Stick To Rum, Instead

(My mother is listening to Billy Joel’s song “Captain Jack.” The lyrics seem to suggest that “Captain Jack” is some sort of drug. Since my mother’s been listening to Billy Joel forever, I figure she’d know about the song’s meaning:)

Me: “What is Captain Jack?”

Mother: “I don’t know; I was going to ask you.”

Me: “Is that what they mean when they say, ‘Talk to your kids about drugs’?”