someone who puts no creativity or imagination into his/her cusses/insults, making them sound stupid.
someone who doesnt know how to cuss effectively.
someone who overuses a certain cuss word.
Sue: dude, youre such a Cuss-tard.
Idiot: "youre a dick!"
same Idiot five minutes later: "youre so dickish!"
Still the same Idiot a few minutes later: "i wont do that thing cause youre a DICK!"
Smart Person:" OH my god, man! youre a freaking Cuss-tard!"