Fat nacker 

Someone who is fat and ignorant. This word is often used when someone annoys you and you can't think of an insult.

Oh Henry you fat nacker, what have you done now. Why did you do that!

Fat nacker by Haydo Thorny April 25, 2010

Fanackerpan 

Female genitalia; minge, fanny, pussy, vagina, vadge etc.

Aaron: I heard you had a lovely evening at the soireé last night, Sir.
Tachia: Indeed - I smashed some fanackerpan before the night was out, to be sure.

Fanackerpan by jfdjones January 16, 2015

Fatpacker 

Backpackers who love to eat a lot while backpacking. They are usually fat.

I am a fatpacker and I've been travelling around the world while getting fat

Fatpacker by Chilalamochila January 15, 2017

Fatjacker

Relating to losing or hijacking fat accumulating in the unwanted body parts such as belly fat, flabby chest, flabby thighs, drooping buttocks.

"this fatjacker will showcase your lean, mean 6 pack to kingdom come"

Fatjacker by chit-chat February 13, 2019