The scales in the Britney-K-Fed world are perpetually skewed. One is doomed to be crazy or in rehab or bald while the other is acting the model parent for the paparazzi. It’s like a law of physics or something.

So, just as Spears began to clean up her act, Federline took a very public plunge into the depths of obesity, baring his flabby chest for the paparazzi at a pool in Miami on Saturday.

The photos available on JustJared.com, among other gossip websites, are disturbing at best, but they also beg the question as to how he can hang on to volleyball player girlfriend Victoria Prince. And obviously, how he snagged Spears in the first place?

Spears, these days, is looking better than ever. She has lost her rehab/baby-bearing weight, and seems to have her hair under control at last. She has been spending a lot of quality time with her sons, Sean Preston and Jayden James, including taking them on vacation in Miami with her parents, and her sister, Jamie-Lynn and her daughter Maddie Briann.

The holiday is a time-out from Britney’s Circus tour that has been going worldwide all summer. She has also released a teaser in advance of the MTV VMAs on Sept. 13 with host and comedian Russel Brand (Forgetting Sarah Marshall).

The video is just one of many celebrity commercials for the VMAs, as Katy Perry, Taylor Swift and Leighton Meester have also released their own themed shorts in preparation for the awards show.

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