At the moment where i am there's some shrinkflation nonsense where sometimes they'll lower the "average total" weight on the "mixed" size eggs but change nothing on the packaging (apart from the weight, on the bottom).

So I'm checking to see if I've got a pack of tiny eggs that just rattle around in the packaging.

But i do a rattle check first.

If I've got the tiny eggs i just buy a different brand instead (until they change it back)