Parental Guidance?

My 8-year-old nephew is watching something on the Cartoon Network called "Hellboy" -- or "H-E-double-hockeysticks-boy", as my nephew calls it. "That's not right!" he exclaimed when he heard the name. He seemed genuinely shocked that they could say that word on TV. I asked him if he was allowed to watch this sort of thing, and he assured me that everything on the Cartoon Network was safe for a child over 7. Maybe I should verify this with an adult. Maybe this makes me the "cool aunt." Maybe I won't be allowed to babysit anymore. :-)