If you're ever lucky enough to be in Kate Beckinsale's presence, make sure you don't fall asleep because she will punish you for it. 

The Love and Friendship star was on Graham Norton the other night alongside Dominic Cooper, Emilia Clarke and Matt Le Blanc when the host outed her as a genius prankster. She apparently gets a huge thrill out of messing with people if they're asleep beside her. 

She described one of her finest ever pranks which involved a chocolate and a bare bottom and well....we'll let Kate tell the story from here. 

Dominic Cooper's reaction is priceless. There's just so many questions when you hear a story like that. 

Via YouTube