Person 2: I know, right?!?!
Person 1: Word! Chh!!!
Person 2: Chh!!!!
Also when one generally doesn't care and/or thinks your stupid.
Person 2: Chh, no way!
There is rarely any adult influence, and as a result it revolves around a large group of 8+ teenagers being idiots with various sharp implements.
Hiking is a large part of CHH, as is blatant rascism and sexism, but all in good fun.
It takes it's namesake from "Charlie's Happy Heroes", named after one of the boys on the founding trip. Charlie is not his real name.
"Nah man, was it a good one?"
"Yeah, we hiked up a mountain to cut a fence for wire so we could hold our toast!"
"Sweet, you heard 'bout last time with the rabbit?"
"Yeah man, I still have the head"