what is an ‘all-fuck’?

Have you ever heard the phrase ‘It is as hot as all-fuck’?

Well, I have. It is a Similie. A figure of speech comparing two unlike things, often introduced with the word “like” or “as”.

And I have also heard many others like it too.

It is as cold as all-fuck

dry as…

wet as…

crazy as…

stupid as…

etc, etc.

You get my point.

But my question is; what is an all-fuck in which these things are compared to?

It is hot, but cold. Dry but wet. Crazy and stupid and everything else under the sun. What the hell is this thing people refer to as ‘all-fuck’? For the life of me I cannot figure it out.

But whatever it is, it isn’t normal as all-fuck.