Definition
If something is beyond a joke, it has become too serious or unacceptable to be considered funny anymore.
不六话（用来形容事情已经变得很严重，不值得开玩笑）
His habit of being late is beyond a joke now; he needs to take responsibility.
他迟到的习惯现在已经超出玩笑的限度了；他需要负起责任。
It started as a few small pranks, but now it's beyond a joke, causing real damage.
一开始只是几个小恶作剧，但现在已经超出玩笑的限度，造成了真正的损害。
The referee's decisions in that game were so bad that it was beyond a joke.
那场比赛中裁判的判决糟糕到已经超出玩笑的限度了。