"american Idol" judge Paula Abdul left behind some bad blood with "30 Rock" star Tina Fey, following a "disastrous" turn as a guest host on "Saturday Night Live" in 2005.

"A year later I saw her on a flight," Fey tells the latest edition of Playboy. "We both looked at each other like, 'Do I know that girl?' And then we both had the same moment of recognition, and she was like 'uuuggh.' I saw it register on her face that she had had a terrible time with us."

Fey says Abdul "was awful" on "SNL."

"I was pregnant at the time and probably a little moody, but I remember thinking, 'She's a disaster! I gotta prop this lady up and get her on TV.'"

How was Abdul a disaster? "In the ways she generally appears to be," Fey says. "It was an 'American Idol' sketch, and she wanted to change parts. So Amy Poehler had to play her."

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