The first photo shows Gaga having her bottom grabbed as she is bent over an unidentified woman's knee, but it's the picture of the wacky singer simulating oral sex with her that has got people talking.

Last year, Gaga finally admitted to being bisexual, telling Barbara Walters she had flings with both men and women.
"I've certainly had sexual relationships with women, yeah," she said at the time.

She also addressed her sexuality in an interview with Rolling Stone magazine.

"The fact that I'm into women, they're all intimidated by it," she said. "It makes them uncomfortable. They're like, 'I don't need to have a threesome. I'm happy with just you.'"
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