Bad karaoke gets even worse when you change the lyrics.

Chris Pratt stopped by the Tonight Show Starring Jimmy Fallon to not only to promote "Jurassic World" but also to bust out some nonsense karaoke jams.

Bruno Mars, Sam Smith and Kelly Clarkson tunes are sung here and their words are changed, hence the "nonsense" in the title.

Watch the video and be warned that it includes yet another "Uptown Funk" parody.

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