Buffer Fat 

When, based on what a person is wearing, it is indiscernible whether they are buff or fat.

I have a buffer fat body; depending on the clothes I’m wearing, you can’t tell if I’m buff or fat.

Buffer Fat by thegreatspritzingduck December 10, 2021

You fat biffer 

Someone eating or aquiring comically large and/or frequent amounts of food, or appearing to do so.
Must be said with a south-west english accent (Cornwall, Devon, etc.)
Only works with the 'You' at the front, and only happens with 'You' and 'Bif' on one note, and 'fat'and 'fer' on a higher one.
There's no real emphasis anywhere, and it's deadpan despite the humourous intent.

"4 pints. And a pie."
"You fat biffer."

You fat biffer by davev July 15, 2005

fat biffer 

Someone who is doing things expected of a fat person. Not usually an insult, as the fat biffer is almost never a fat person. Usually heard in the south of England. Is said quietly, and never with a tone of shock or surprise. This makes it sound like the fat biffer does this sort of thing all the time, though in truth he rarely does.

Dave in pub: Pint of Carling and two pies please.
Other dave: You fat biffer.

fat biffer by pissface3000 October 21, 2015

Bufferbating 

1. When you're masturbating to internet porn on a 56k connection, and right as you hit your climax the video starts buffering, so you end up orgasming to a buffering bar.

I always want to kill myself after bufferbating.

Bufferbating by AlphaR0meo October 14, 2012