"The Daily Show with Jon Stewart" became the latest stop on the promotional rounds for Justin Bieber's new "Never Say Never" film last night (Feb. 3), only the teen idol wasn't exactly a guest on the show in the usual sense.

The Daily Show With Jon Stewart Mon - Thurs 11p / 10c
Intro - Justin Bieber and Jon Switch Bodies
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In a classic "Freaky Friday" situation, Bieber and Stewart have "switched" bodies. Bieber's subsequent impression of the "Daily Show" host isn't half-bad, though. He's interested in serious political guests, and he likes his hair.

Stewart's take on Bieber? Not great, but that's a cute purple hoodie, Jon.

Watch to see how they end the madness.