Olivia Munn administered random drug tests for John Mulaney at the height of his addiction struggles. The 42-year-old comedian – who checked himself into rehab for cocaine and alcohol dependency in 2020 – has revealed how Olivia, 44, helped him amid his troubles. He told GQ magazine: “It’s like a relief … I like to be able to not even have that be a question in her or anyone else’s mind. Something about peeing in that cup is like, I’m walking this walk. It gives me confidence.” At one point in time, John felt like he couldn’t function without drugs. He said: “There was a time when I would have…