"This is why they call it liquid courage." It's not easy to ask Eminem for a feature, even if you've worked with him before. According to Pink's new interview with Entertainment Weekly, it took a lot of wine for the singer to work up the courage to email the rapper about doing another collaboration. "I sneak-attacked him," she said, explaining how her new track "Revenge" came together. "[Producer] Max [Martin] and I started making ['Revenge'], and I wrote this rap. We were drinking a lot of wine, and then I went home and I thought more wine would be a good idea." Once she'd consumed a satisfactory amount of alcohol, it was time to send off a risky email. "I emailed [Eminem],” she said. “This is why they call it liquid courage. And I said, ‘You know I love you. I like that you work with a lot of the same people, like Rihanna. She’s hotter than me, but I’m funnier. So I’m going for a rap Grammy, and I’d like to take you