That's an old joke. 那是个老掉牙的笑话.
Your jokes are wearing thin. 你的笑话我听腻了. What's so funny about that? 那有什么好笑?
You have no sense of humor. 你缺乏幽默感. You're too serious. 你太严肃了. He always keeps a complete poker face. 他老是一副死板板的面孔.
He's always telling dirty jokes. 他老是在说黄色笑话. He told an off-color joke to me. 他跟我说了一则黄色笑话. That was a nasty joke you told. 说的那个笑话无比下流.
