Two Bi-Racial Friends on Being Black

From the NYT Freakonomics blog, on mixed race children:

There are some bad adolescent behaviors that whites do more than blacks (like drinking and smoking), and there are other bad adolescent behaviors that blacks do more than whites (watching TV, fighting, getting sexually transmitted diseases). Mixed-race kids manage to be as bad as whites on the white behaviors and as bad as blacks on the black behaviors.

Me: since when was watching tv a bad adolescent behavior?!?!?1
BFF: I'm guessing they mean watching too much television
Me: lollll there is no such thing!
Me: long as ur homework is gettin done
BFF: yep you're Black
Me: LOL!