A Canadian friend says that. I have an idea what it means, anyone know why?

So, what does it mean?

You.ve had ,it, kaput, finished, done.?

That's what we always took it to mean. If something had the bun, it was finished. Broken. No longer functioning.

But, as I think that Richard was asking, from whence came "the bun"?

Steve got the meaning correct.

I've no idea where the expression came from. It likely started in the dim times, before electricity, running water and pay toilets.

I remember how excited we got about fire.

The basic elements John, fire, ice, and corn silage. And beer, how could I forget beer.

I would like to add this extraneous tidbit.

Until I posted this, no mention was made in this thread of COVID, the US election or extraterrestrials.

Well Steve, here in the US we've 'had the bun' with losing the election, that was caused by the virus, and extrasrrestrials voting by mail.

Yes. We're much like the native indians back in the 1600s.

Until the extraterrestrials arrived, we never suffered from COVID or elections.

It's kinda like ... "Had the bisquit". It's done for.

Maybe this definition

Understanding pavement installation certainly cleared up the origin of the phrase for me.

The link would not open for me.

Sorry about the bad link, I fixed it and will repeat here definition

The link referred ro being the same as having had the biscuit which is a reference to having a Catholic priest administer the last rights -- the "host" being the biscuit. But I ain't no Catholic.

Makes sense.

Yeah, we finally got some use out of those lightening strikes. I hated when they scared the pack Brontosauris.

I've never, ever heard anyone say 'had the bun' in Canada. 'Had the biscuit', yes, but not bun.

Can be used in place of "Tits up" which is more self explanatory.