From parodied duets to the now infamous Lip Sync Battle, Jimmy Fallon has had some epic musical skits on The Tonight Show. But it looks like Jimmy stepped things up with "Nonsense Karaoke."

Enlisting Guardians of the Galaxy star Chris Pratt, the two would take turns singing some of today's big hit songs with only one catch -- all the lyrics will make no sense. The game started with Mark Ronson's "Uptown Funk" featuring Bruno Mars, who Chris confidently replaced with himself. While Jimmy believed that Chris "set a high bar" with that performance, the late night show host took on "Stay With Me" by Sam Smith.

Instead of the pleading love song, the chorus sounded ridiculous with lyrics like "Oh won't you shave my knee / Into a 'knee goatee' / Some old duck is drinking tea / But darling, shave my knee."

After a rousing round of applause, the two decided to collaborate and sing "Since U Been Gone" by Kelly Clarkson. And off the bat, the words were complete nonsense. "Bearded King -- he bought some depends / I saw a mule but it had all split-ends / Yeah yeah / Scissor named 'Shawn'," Chris sang in a falsetto.

And as they two belted off key, the song grew bigger and bigger till they ended on the lyrics, "Tickle my junk." See the video and get ready to laugh above.

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