Joan Rivers has ruined the next season of Celebrity Apprentice.

And we don't mean by simply appearing on it.

The talk show host opened her plastic mouth this week on the Howard Stern radio show, telling listeners that daughter Melissa makes it "right to the end. Rivers then caught herself and said: "Ugh! I'm not supposed to say that," but it was too late.

Stern and sidekick Robin Quivers cracked up, as Donald Trump went to work on a statement that will likely read: "I am in charge of a show that has the best spoilers in the world!"

Melissa Rivers will reportedly do well this season on Celebrity Apprentice. Does anyone care?