The full email:

The App Store continues to evolve, and as such, we are constantly refining our guidelines. Your application, Wobble iBoobs (Premium Uncensored), contains content that we had originally believed to be suitable for distribution. However, we have recently received numerous complaints from our customers about this type of content, and have changed our guidelines appropriately.

We have decided to remove any overtly sexual content from the App Store, which includes your application.

Thank you for your understanding in this matter. If you believe you can make the necessary changes so that Wobble iBoobs (Premium Uncensored) complies with our recent changes, we encourage you to do so and resubmit for review.

Sincerely,
iPhone App Review

At this time it’s unclear if Apple is removing all apps with the “over the age of 17″ warning that contain sexual content, or just specific apps whose sexual content is deemed “overt” by Apple. While iBoobs has been removed, I was still able to download an app called “Sexy Screen Wash Lite” at the time of this writing. TechCrunch has also been able to download other “sexy” apps, which makes Apple’s working definition of “overtly sexual content” unclear.

This isn’t the first time iBoobs has been removed from the App Store. In 2008, Apple rejected it on the grounds of “objectionable content.” The app was later allowed back in the App Store.

I wish Apple would either remove these apps, or file them all under a special “sexy” section in the App Store that remains hidden unless enabled. Of course a free T&A app is going to be a popular download, but when I’m searching for cool new free apps, it’s annoying when the top list is populated by “sexy” junk apps.