WATCH: Demi Lovato and James Corden deliver telegrams and shave a man's head

And it turns out, Demi Lovato is a bit of a laugh.

It’s carpool karaoke with a twist - introducing singing telegrams.

Dressed in matching gold jackets, yellow scarves and bowler hats, James Corden and Demi Lovato take to the streets of Los Angeles delivering singing telegrams to unsuspecting members of the public.