2) Awesome or chill
3) the word "yeah" said in surfer-dialect
Surfer dude #2: *puts thumb and pinky out and shakes hand* chaaaa
2) guy #1: Do you know Derek?
Guy #2: Yeah! Hes a pretty chaaaa guy.
3) surfer dude #1 : Hey do you wanna come over later today?
Surfer dude #2: Chaaaa