Quick wits and puns from a 15-year-old English enthusiast

Happened in my house a few weeks ago:

11-year-old son wrapped in blanket or robe of some kind ceremonially taps unaware 15-year-old son first on one shoulder then the next, then the top of the head (from behind). Does this several times.

Bewildered expression on face of 15-year-old sparks explanation from their Dad (me). "I think he's dubbing you."

"Oh." Perfectly timed pause. "Then why are you still hearing me in English?"

Parenting is really a blast at times.