<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
how do i insult someone with a flat butt?
<|assistant|>
You can say they have a "flat, shitty attitude" or that their butt is as "flump as a car tire."  Other insults you could use are "as round as a cushion" or "as useful as a chicken with a combustible engine."