The most recent portion of Beyonce's behind the scenes look at her recently released magnum opus is perhaps her most revealing yet. In Part 4 of "Self-Titled," she discusses the super sexy content behind the song and video for "Partition," the track where she sings about giving her partner head in a limo.

Bey says that the song (co-written in part by sexy experts The Dream and Justin Timberlake, and produced by Timbaland) reminded her of when she and Jay-Z first met "and he's trying to scoop me and thinks I'm the hottest thing in the world." She reveals that even though she basically freestyled the lyrics in the studio – "I didn't have a pen and paper" – at first, the content embarrassed her:

I was so embarrassed after I recorded the song because I'm just talking shit. And I'm like, "I can't play this for my husband." I still haven't played it for my mom. She's going to be very mad at me.

The video was more inspired from real life than the lyrics. Bey says that since the day she and Jay-Z got engaged was also his birthday (December 4), she took him to Crazy Horse strip club in Paris, the same place the video was shot:

And I remember thinking, "Damn these girls are fly." I just thought it was the ultimate sexy show I'd ever seen. And I was like, "I wish I was up there. I wish I could perform that for my man. So that's what I did for the video."

She also speaks about the weight she gained when she was pregnant, her conscious choice to make sure her body looked good before shooting the video and the connection between motherhood and sexuality:

I was very aware of the fact that I was showing my body. I was 195 pounds when I gave birth. I lost 65 pounds. I worked crazily to get my body back. I wanted to show my body. I wanted to show that you can have a child and you can work hard and you can get your body back. I'm still finding my sensuality, getting back into my body, being proud of growing up. It was important that I expressed that in this music because I know there are so many women that feel the same thing after they give birth.

You can have your child and you can still have fun and still be sexy and still have dreams and still live for yourself.

Referencing lyrics from "Superpower" with Frank Ocean, Beyoncé ends by explaining:

I don't at all have any shame about being sexual and I'm not embarrassed about it and I don't feel like I have to protect that side of me because I do believe that sexuality is a power that we all have.

In other Beyoncé related news, here is a long-awaited mash-up of D'Angelo's "Untitled (How Does It Feel)" with "Rocket":