Perry judged American Idol's ninth-season auditions in Los Angeles, which aired last night on Fox.
"It's kind of like judging a talent show," she told MTV News.
"American Idol was great fun. It was so easy. I didn't really make anybody cry, but I did tell the truth to some kids that might have needed to hear it."
While Perry said she would jump at the chance to serve as a regular American Idol judge, she also expressed relief about not having to make the really tough decisions.
"I guess the pressure gets really on when you start eliminating the number of people that are going through," she told MTV News. "Ten, nine, eight, seven, six, and then you've got the final two. That can be kind of tense and stressful."