If you're going to play a game that involves cold calling celebrities, there are probably few better playing partners than one of the world's most famous actors, Dwayne "The Rock" Johnson.

In the clip above, The Smashing Machine star sits down opposite BBC Radio One host Greg James for a game of "Sit Down, Stand Up", where they take turns ringing famous friends and guessing if they're standing up or sitting down.

The end result? A fun chat between The Rock and UFC heavyweight champion Tom Aspinall, and a very interesting insight into The Smashing Machine director Benny Safdie's unusual answering machine message.