Gross! Ke$ha tweets a photo of herself peeing

The pop star posted the skanky self-portrait on Twitter along with the caption: "Pee pee on the street. PoPo come n get me if u can find meeee. I blame traffik."

By "PoPo" she means the police, not … well, ugh, you know.

So, had the 25-year-old been drinking when she made the unfortunate decision to share her embarrassing moment with the world? Well, she wasn't even tipsy the last time she was caught up in a public urination scandal. That's right, it's happened before!

Ke$ha made headlines a couple of years ago for relieving herself in a sink at a London pub. But she made no apologies for her bizarre behaviour at the time.

"People made a big deal about me peeing in the sink but that wasn't that shocking," she told Contact Music. "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."