Top 100 YouTube Videos
14. Justin Bieber Carpool Karaoke with James Corden

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Love him or loathe him, Justin Bieber was a really good sport when he joined James Corden in his car for a spot of carpool karaoke on the streets of Los Angeles. In around a year, more than 40 million people have tuned in to watch Justin and James singing, dancing and being silly in the car.

There's one thing that is for sure though, Justin really likes listening to his own songs and he does seem to be in a much better place these days.

He appears to have grown up a bit now that he is no longer a teenager and is definitely acting in a more mature, responsible manner. And Justin doesn't seem to mind having the mickey taken out of him in this particular video, although James Corden is a very funny and extremely likable driver. But the most interesting thing about this YouTube video is that we learn how Justin only wears his Calvin Klein underpants once and then he throws them away.

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