Which Teen Mom Dude Showed Off His Cut Abs on Twitter? (PHOTOS)

Immediately after breaking things off with Teen Mom star Maci Bookout back in September, Kyle started a new diet and workout regimen — and the hard work has obviously paid off. Check out that definition!

While we're not huge fans of the MySpace-esque selfie, we can't fault the guy for wanting to put his rock-hard abs on display. You know what they say — if you got it, flaunt it!

What do you think of Kyle's new and improved physique? Dish it in the comments below and click here to play more Teen Mom "Guess Who?"