Carrie Fisher stood on a cruise ship stage slurring her words, mumbling and appearing highly impaired. At one point her dog added to the surreal scene by urinating and pooping on the stage.

Many assumed it was a breakdown, or a relapse of her prescription pill addiction. But Fisher, 56, has now broken her silence about that headline-making day last month on the Holland America Eurodam ship, revealing she was in a highly manic state caused by her bipolar condition.