<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
I need help coming up with a good creative insult
<|assistant|>
Losernapper! 
(A combiation of "loser" and "napPER") 
This insult implies that the person you are insulting is both mentally and physically incompetent, like someone who takes too many naps during the day!