James Corden made a joke on Twitter Monday that was kind of a spoiler for the show, Game of Thrones. A fan of the series in response made an explicit tweet back to him and ended it off by saying “I hope his kid gets cancer.”

The persons account was suspended so you can’t see it. But, James Corden, saw it and tweeted back to hi msaying “That is, without question, the single most upsetting thing I think you could ever say about me or my family. Please take a minute and think about what you just wrote and whether you want to be a person who publicly says such things. I believe you’re better than that.”