It isn't the waitstaff's only job to serve you. They're also interpreters that can skillfully translate a wide variety of awkward-speak.
Man, I had some mushrooms and I grew, like, 50 feet man. Not mentally or developmentally or anything like that. Physically. It was so real, man.
Or four-ply. Or eight-ply. Sixteen? Let's not get carried away.
If his headphones are in while you're serving him, then it's both.
You win this round, me.
Nepotism is like corporate inbreeding.