When it comes to songwriting, Taylor Swift already has a bevy of muses — ex boyfriends — to choose from.

But it probably still stung when Michael J. Fox had the following reaction to the possibility of a relationship between the country superstar and his 23-year-old son Sam:

Fox told Vulture, “No. No . . . Just back off . . . but Taylor Swift writes a song about everybody she goes out with, right?

“What a way to build a career.”

The Back to the Future actor even tried his hand on naming a potential song his son could inspire.

“’Sam, You Piece of S**t.’ Oh . . . that was the girl you brought home!”

taylor swift hits the red carpet at the 2013 golden globes

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“Hey everybody, Michael J. Fox got in touch with me today and we are good. Thank you for having my back,” she wrote.

The whole idea of Swift and Fox’s firstborn all started last Sunday, when Golden Globes co-host Tina Fey took a jab at the singer’s love life.

“You know what, Taylor Swift? You stay away from Michael J. Fox’s son,” the 30 Rock star said.

Swift’s romance with One Direction heartthrob Harry Styles fizzled in January after 37 days of dating.

Who do you think Taylor Swift should date next? Check out our suggestions in the gallery, above, and share your suggestions below.