To this day I'll never understand why people find "pissed" to be a bad word. WTF?
It's not a word I would use in polite company, but I don't think it's a "bad" word.
My mom did tell me not to use it as a teenager, and I generally refrain from using it to this day because of that. She was always reviled by the word I guess.
Anyways the issue is what is an appropriate language for children to use and to hear? I don't think children should use words like "pissed" or whatever. And it just kind of snuck up on the show, I had it on the background and wasn't really paying attention until I heard that.