Tina Fey [Photo/Agencies]

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The comic writer and actress has a smooch with the Muppets puppet in their latest film, and joked that he was a perfect gentleman about it.

She told Us Weekly magazine: "I was nervous but Kermit put me at ease. Although I did hallucinate for a few hours afterwards."

Tina's comments about hallucinating are a joking reference to the Bufo Alvarius variety of toad - commonly known as a Colorado River toad or Sonoran Desert toad - which when stroked under its chin produces a poison which can be hallucinogenic if consumed by humans.

Speaking about her role as a bad guy in the film, Tina added her daughters Alice, eight, and Penelope, two "are excited to see the movie."

Tina famously wrote and appeared in catty high-school comedy 'Mean Girls' and while she has ruled out a sequel, she's keen for there to be a ten-year anniversary of some kind.

She has said: "[There's] definitely not a movie. It's just the anniversary is coming up, so everybody get your pink shirts. It's been 10 years. You can tell when you look at me it's been 10 years."