There’s a new song by a group called Hand Job Academy and it's named after Girls star Lena Dunham. For those wondering how the actress reacted when she heard it, Taylor Swift captured it all on video.

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In the Instagram video posted Wednesday, Dunham is seen dancing to the chorus of the track which simply repeats her name.

"This was what happened when Lena and I found out that there is a rap song called 'Lena Dunham,'" Swift wrote as the caption.

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The Brooklyn-based rap collective also shared a photo of Swift and Dunham on Instagram with the caption, "The day the internet ate itself. See @taylorswift's video of @lenadunham getting down to OUR SONG on Tay-Tays Instagram."

A video posted by Taylor Swift (@taylorswift) on Nov 11, 2014 at 8:35am PST

This isn't the first time Dunham and Swift spent time together. The 1989 singer was recently at Dunham's house recording the song "Out Of The Woods" with her boyfriend Jack Antonoff.

The actress shared a photo of Swift's recording session with the Fun band member after the song was released.

Took this the first time @taylorswift & @jackantonoff made music together in our living room. Now they are #1 on iTunes with #OutOfTheWoods. Kvelling," she wrote as the caption.

See the photo below.

A photo posted by Lena Dunham (@lenadunham) on Oct 10, 2014 at 10:07pm PDT