According to Contactmusic, the 'Tik Tok' singer claimed that the incident last October wasn't worth the media attention.
"People made a big deal about me peeing in the sink but that wasn't that shocking," she said. "I wasn't even drunk.
"It's an animal instinct as a human and as an animal. I had to pee. And outside there's paparazzi everywhere - what am I supposed to do? I accept it's uncouth. But it's just being an animal."
Ke$ha will release her debut album Animal on February 1.