I Knew Everything About Sex Before I Was Even 7, Says Kesha

London: Singer Kesha has revealed that she knew everything about sex before she even hit puberty.

"I knew everything about sex before I was even seven," the New York Daily News quoted Ke$ha as telling London's Times on Sunday.

"My mom left me at home when I was 14 with a credit card, and a box of condoms and the keys to the car and said, 'Don't get pregnant and don't drink and drive."

"I had to be responsible for myself," according to Contactmusic website.