Thug in Training

When I used to have my dive shop, a neighborhood kid used to come in all the time to hang out. He must have been 10 or 11 years old, he had an earring, and had this thug-in-training air about him.

He was a good kid though. He used to help me fill tanks, and just hang out and crack me up. He came in one day, and we had this conversation:

Thug: Hey Beej? Is there beer in root beer?
Beej: You mean, is there alcohol in it?
Thug: Yeah.
Beej: No, there isn't.
Thug: If there's no beer in it, then why is it called root beer.
Beej: I don't know. But then, why is it called shampoo when there's no poo in it.
Thug: Ugh! You're so gross!