Kevin Federline doesn't care that he's fat

Kevin Federline has at least put on an Olsen twin and he doesn't care.

Once a svelte dancer and the object of Britney Spears' affections, K-Fed doesn't give a crap anymore -- and it shows.

Last night, ex-fiancee Shar Jackson said, "He doesn't care.  The beautiful thing about him is that he could care less."

I don't think it's a "beautiful thing" that he could care less.  It's awful, but yet he still manages to get a girlfriend.  Money does weird things to people, doesn't it?

He's got nothing but free time, you would think he would get off his lazy butt and popazao himself thinner.

At least he pays attention to their two children, Kori and Kaleb.

Shar added, "He calls them all the time.  They have good long phone conversations.  I'm like, 'Okay, that's good.  Hang up the phone 'cause we have stuff to do.'"

He's got no talent, so it's best that he just stick around and take care of his four children.  At least he could be a good dad to them.