01/18/2011 08:25 am ET | Updated May 25, 2011

Ke$ha: 'I Knew Everything About Sex Before I Was Even Seven'

Ke$ha isn't shy about sexuality, and we may now know why: she's known about the birds and the bees since kindergarten.

The popstar spoke to London's Times on Sunday about her long sexual history, and confesses that it started very early.

"I knew everything about sex before I was even seven," she said (via Contact Music). 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."

As such, she's got no problem sexing up her tours for her hit album, 'Animal.' "I'm not a babysitter. My b**ls are on the table. I'm very upfront with who I am. There is sex. There is alcohol. The kids are gonna figure it out someday."

The singer spoke this summer about some of her favorite vices, such as giving safety pin tattoos and spanking men.

She's also had a number of nude photos and, allegedly, a sex tape leak out.