come the raw prawn（尤指佯作不知而）欺骗，瞒骗；装糊涂

【例句】
He's a successful businessman. You can't come the raw prawn with him. He knows everything.
他是个成功的生意人，你不能和他装糊涂，他知道一切！

Don't come the raw prawn with me - you know very well what I'm talking about.
别跟我装糊涂——你很明白我在说什么。