Baptism by smoke

A person being introduced to smoking marijuana for the first time.

Person 1: "You're happier than usual. Almost like a religious person."
Person 2: "I had a baptism by smoke recently."
Person 1: "What does that mean?"
Person 2: "It means 'A person being introduced to smoking marijuana for the first time.'"
Person 1: "Oh, so that means you smoked for the first time?"
Person 2: "Yes."
Person 1: "Who baptized you?"
Person 2: "Janey did."