You know those moments when you're with your best friend and a joke or game devolves into mindless yammering that only you find funny? Sophie Turner and Maisie Williams are friends who have those kinds of moments.

Thankfully for us, they let us in on the joke in this clip from their episode of 'Carpool Karaoke' on 'Apple Music', which sees the two Stark sisters make their way around Austen, Texas en route to SXSW and on the journey, Williams decides to play a game involving impressions of their 'Game of Thrones' on-screen dad Sean Bean and Sir Mix A Lot's 'Baby Got Back'.

They're truly unhinged, but in the best possible way.