When I think of Brian McKnight, I think of R&B and romance but after hearing an unreleased song the crooner released last night, I may have to re-categorize Brian into the Uncle Luke/2 Live Crew folder!

It was just last year that McKnight proved that you’re never to old to let your “freak flag” fly when he was caught sexting photos of his peen to women all around the country.

[READ: Wanna See Brian McKnight Naked? PHOTOS]

Now the 40-something divorced father is on a mission to prove he can teach you some things by marketing a new “adult” mixtape and last night, he became a trending topic on the social networking site twitter after releasing a video of an unreleased song entitled, “If You’re Ready To Learn.”

The song is rated “R” for it’s sexually explicit lyrics and you’ve got to hear it to believe it.

Video of McKnight singing his new “adult” song below…

VIDEO: Brian McKnight Previews New “Adult” Song

Let me show you how your p*ssy works, since you didnt’t bring it to me first / I have lots of things to show you if you’re ready to learn…

Let me show you how your p*ssy works, butcha didn’t know that it could squirt. / I have lots of things to show you if you’re ready to learn…

I told y’all Brian McKnight was a freak! Is this what they call “mid-life crisis music? 😯

McKnight caught a ton of flack on twitter and has since vowed to remove the song…

What do you think of Brian McKnight’s drastic u-turn from romantic good guy to freaky sneaky singer?