Meghan Trainor's 'Carpool Karaoke' episode has a wonderful surprise appearance from Dr. Phil

Meghan Trainor and James Corden's voices sound impressively good together. They seem to have a lovely time together in general, in fact.
Not only do they compose a (surprisingly catchy) song about being in traffic, but they also have some interesting chats about the music industry and how Trainor met her husband (in a bowling alley during a double-date with Chloe Grace Moretz and Brooklyn Beckham, it turns out).
But the highlight of the whole thing? Shortly after Trainor professes her love of Dr