This term is often used in the Black Desert Online mmorpg community, typically used to describe a certain type of player.
Wow, I can't believe you got zerg'd. He's such a fat fuck.
Fat fuck moment...
A fat, stupid person, just like you
I bet you don't know 1+1, you fat fuck
Fat fuck is a fat fuck animal
Hey, there's a fat fuck on Amazon for 10 dollars
person 1: fat fuck posted a new video
person 2: oh do you mean nicocado avocado
A pretty smart dog from South Africa, this fat fuck eats 15.3KG of cat food on average a day. This little shit is also scared of water.
We had to get a tow truck to rescue fat fuck from the pool.