You are a cheater.
You are stubborn.
You are hasty.
You're all insane.
You are crazy.
You are crazy.
You are optimistic.
You are naughty.
君はばかです。
You are morons.
You guys are idiots.
You guys are stupid.
You're morons.
You are gloomy.
You are mean.
All of you are crazy.
お前, たるんでるぞ.
You should put more of your heart into your business [work].