Chris Pratt, Jimmy Fallon Sing Terrible (Yet Adorable!) Karaoke: Watch!

So wrong, yet so right! Chris Pratt and Jimmy Fallon belted out some tunes during The Tonight Show on Friday, April 25 — with a silly catch! The duo played a round of "nonsense karaoke," which replaced the songs actual lyrics with, well, nonsense.

The Jurassic World actor started it off with Mark Ronson and Bruno Mars' ever-so catchy hit "Uptown Funk." Fallon, of course, couldn't help but jump in for a hilarious duet.

Chris Pratt Nonsense Karaoke
Jimmy Fallon and Chris Pratt NBC

"Arm pit is ice cold / Egg shell diaper, that's quite old / This one, for them drunk squirrels / Them drunk squirrels love Aspercreme," Pratt sings. "Cryin' while you snuggle it up with a kitty."

Anna Faris' love and the late-night host, 40, continued to make the audience laugh with renditions of Sam Smith's "Stay With Me" and Kelly Clarkson's "Since You've Been Gone."

Watch the funny video!

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!