Big Bird told Obama to leave him out of his political ads. Now “Friday Night Lights” creator Peter Berg wants Romney to stop using his show’s signature slogan.

Berg sent Romney a harshly worded letter — obtained by The Hollywood Reporter — requesting that he stop using “Clear Eyes, Full Hearts, Can’t Lose” in his presidential campaign.

Your politics and campaign are clearly not aligned with the themes we portrayed in our series.”

Romney has previously said that “Friday Night Lights” is one of his and his wife Ann’s favorite television shows. On the night of the first presidential debate last week, Romney staffers secretly put up a sign backstage at the University of Denver that read “Clear Eyes, Full Hearts, Can’t Lose.” Romney’s son Josh tweeted a picture of his parents standing under the sign, and Ann Romney later sent an email to supporters with a picture of Romney tapping the sign (as Kyle Chandler’s character, coach Eric Taylor, often did in the TV series) before walking out onto the debate stage.

It subsequently became a catchphrase for the Romney/Ryan camp.

Berg writes:

The only relevant comparison that I see between your campaign and Friday Night Lights is in the character of Buddy Garrity — who turned his back on American car manufacturers selling imported cars from Japan. We are grateful for your support of our beloved show, but we are not in any way affiliated with you or your campaign. Please come up with your own campaign slogan.”