Donna Svennevik

Apparently people have yet to learn that if you mess with Taylor Swift's feelings you will get burned via song or twitter. Either way it’s not cool to be on the losing end.

You might recall one of the many highlights from the 70th Annual Golden Globes Awards last week came when host Tina Fey took a jab at Swift when she told the singer (and a billion people watching) "stay away from Michael J. Fox's son." Instant classic!

Later that week Vulture spoke to the actor and asked him how he would feel if Swift were to pursue his son Sam Fox, 23. Fox responded with: "No. No... Just back off…I don't keep up with it all. But Taylor Swift writes songs about everybody she goes out with, right? What a way to build a career."

He added that if the "I Knew You Were Trouble" singer came to his house for dinner he “wouldn't even know who she was," but that it would hit him, later, after she released the post-break-up song "'Sam, You Piece of Sh-t.' Oh … that was the girl you brought home."

Does Alex P. Keaton have an awesome sense of humor or what? Well,  perhaps not as much as we'd hope because for some reason he took it all back! Yesterday Swift tweeted: "Hey everybody, Michael J. Fox got in touch with me today and we are good. Thank you for having my back."

Did Team Swift threaten the Back To The Future actor? We're not sure why he pulled a 180, but perhaps his son had something to do with it: 

Hope he gave her my # MT: @taylorswift13: Hey everybody, Michael J. Fox got in touch with me today and we are good.
Jan 18 via Twitter for iPhone Favorite Retweet Reply

Hope he gave her my # MT: @taylorswift13: Hey everybody, Michael J. Fox got in touch with me today and we are good.
Jan 18 via Twitter for iPhone Favorite Retweet Reply