To ask someone to explain the biscuits

[Cat98]

Why do we give biscuits to certain posters? I mean, it seems to be posters you all don't like/agree with, but biscuits are ... nice.. Shouldn't they be given some raw mackerel or something? Or some old smelly cheese? Not a yummy crunchy biscuit. Please explain.

It's something to do with Gordon Brown.
He came on a Mumsnet web chat and avoided answering a question about what his favourite biscuit was.

en.m.wiktionary.org/wiki/take_the_biscuit

On my phone app it shows brown balls- is this the biscuits? Or is that flinging poo at people?

That's the biscuit. Jammy dodger on computer screen.
The martini on the app is a glass of wine on the computer.

When I first starting MN the biscuit looked like a boob (jammy dodger) so I thought it was a way to call the OP a tit.

I've found the last thread about this. Amazingbouncingferret answered well, but I can't link threads from the app.
Anyway, the biscuit is to say "no comment" in the manner of a reluctantly interviewed politician.
From Gordon Brown's "biscuit gate"
www.theweek.co.uk/politics/18929/brown’s-biscuitgate-last-crumb-truth

Ahhhh makes sense now...

I have always been under the impression that the saying '..taking the biscuit' was another politerway to say '..taking the piss' (which I hate).

So if someone is being ridiculous in a post you can just say 'here have a ' (because they are taking the proverbial biscuit anyway)