Songfacts®:

• When Kesha's frequent collaborator Dr. Luke first gave fans a sneak peek of this song, in which she praises a lover's prowess, the singer took to her Twitter account to mock-reprimand her producer, writing: "You leaked my song about me having sexy time with a ghost, @thedoctorluke. Now everyone knows I get it on with ghosts!"
  
  It turns out that rather than literally being about getting it on with Casper, Kesha is singing about some experiences she had with the supernatural, but in an erotic way. She explained to NME: "It happened when I was living in this flophouse in Laurel Canyon. I've always been open to the supernatural and in this house, it was really obvious there was something going on. It got more and more intense over the course of the year. It started waking me up at night. I found a snake under my pillow. I used to get woken up at 3 a.m. with crazy shadows on the walls, outlines of men. It was a really dark, sexual thing happening there."
• The song contains a portion of the composition "Wouldn't It Be Good," which was the only Hot 100 hit for the English singer-songwriter Nik Kershaw, peaking at #46 in 1984. He did better in his home country, achieving seven UK Top 20 hits in the 1980s as a solo artist. Kershaw later became a songwriter penning tunes for the likes of Chesney Hawkes ("The One and Only") and The Hollies ("The Woman I Love").
• Some high-powered songwriters were involved in this track. Along with Kesha and Dr. Luke, Katy Perry collaborators Bonnie McKee and Max Martin are also listed as writers along with Nik Kershaw (because of the sample) and Cirkut. Dr. Luke and Cirkut are the producers.