A promotional clip released today features Sarah Palin — who has often been parodied by “Saturday Night Live” alumna Tina Fey — apparently returning the favor and parodying Fey.

The clip is a promo for something called “31 Rock,” and includes an appearance by Sen. John McCain. The clip was posted by the Independent Journal Review.

We don’t think “31 Rock” is a real project, but the clip appears to leave the answer to that question intentionally vague.

Here it is …