A wet blanket. Someone who doesnt embrace life.
brock: hey man is stash coming out tonight?
kelly: nah he's at home studying
brock: ahh man what a wetty blang blang
Repeating a quote, or funny line you have said previously, to a new audience.
Basically trying to get a second round of laughter by bringing it up again, even if it wasnt funny the first time.
man 1: hey did you here my burn on kelly yesterday? He hit a shot playing basketball and said 'im on fire'.. so i was like 'thats cos you have red hair' ha ha ha
man 2: jeez dude dont be a Cads