When you're as tall as Jameela Jamil, two things happen: first of all, you are always the big spoon, even when you're dating James Blake, aka the only other British person as tall as you are. Second, you have lots of places to smuggle snacks, from butt jerky to boob chocolate.

As Fallon points out, having her on during his week of live shows might have been an interesting time for the NBC censors.

In addition to possibly traumatising Questlove, Jamil also tells Jimmy Fallon about her Instagram campaigns and the recent change to limit diet product advertising.