Fat lazy boy in the house! Kevin Federline isn't just a slob because he's fat and nasty, he also carries over his laziness into his home life too.  Fat-F*ck has been hit with a bill for $110,661 in unpaid rent, and damages he did to a home he was renting in Tarzana, California.

The home owners claim K-fed owes 6 months in unpaid rent and left the house in craptacular form. If he doesn't pay up, they're threatening to take the dough boy to court.

Some of the damages listed in the letter sent to Kevin include:

Gutters full of cigarette butts and empty beer bottles
A broken beer dispenser on the barbecue island
Permanent spit marks on exterior paint
Drawings all over the walls
A room that was turned into a studio (without the owners' permission)
Broken dishwasher ... with broken baskets
Master bathroom windows tinted (without owners' permission)

Why run away and not pay your bills when everyone knows who you are and they can track your wide-load a** down? It's too bad the gutters never caught fire and burned down with Kevin trapped inside... The kids would be at Britney's of course.

I love the idea of having tinted windows in his bathroom. He's trying to recreate his fat-fug-driving-down-the-road-sweating-like-a-whore-on-a-busy-Saturday-night look.