"That song just came on the radio and I have to say, I love hearing Britney Spears sing my lyrics, every single day. It never gets old. I get so excited. It's better than any drug when you hear Britney Spears sing a song you wrote." -- Ke$ha
While Bob Dylan brings Ke$ha to tears, the pop singer says that Britney Spears excites her, especially the 2011 hit 'Till the World Ends' that Ke$ha co-wrote. The friendly duo met in person for the first time last year, but never actually had the skinny dipping session Ke$ha had been dreaming about.