'Avengers' stars Chris Hemsworth and Scarlett Johansson took part in Scott Mills and Chris Stark's BBC Radio 1 game 'Playground Insults', and it's as funny as it is awkward.
The aim of the game is to trade insults that will make each other laugh, with the final killer insult winning the game.
The insults vary from everything from Chris's granny cardigans to Scarlett's huge trousers, and of course, they get some digs in about their respective 'Avengers' characters.
Take a look:
