Slacking Off On Growing Up

(I work for a company that sets up trade shows. My team is spending a few days on location doing prep work.)

Supervisor: “Hey, when we finish for the evening I know a great bar we can go for dinner.”

Me: “Uhm, okay, but how are we going to get [Coworker] in?”

Supervisor: “What do you mean?”

Me: “He’s not 21 yet.”

Supervisor: “Yes, he is!”

Me: “No. I don’t think he’s even 20. He just graduated high school. Didn’t he?”

Supervisor: “He’s at least 21!” *calls over Coworker* “How old are you, man?”

Coworker: “I’m 19.”

Supervisor: “Seriously? I thought you were, like, 25.”

Coworker: “I still live with my mom! Didn’t you think that was a little weird?”

Supervisor: “Well, yeah, but I just figured you were a slacker.”