When I was a little kid in Sydney, every Sunday after church my mom would take me to McDonalds and buy me a Big Mac meal.
I just moved back and have had a Big Mac every now and then… I seem to recall them being bigger in the past, and they would have these paper rings around them to hold them together. They don't seem to do the paper rings any more, but have the Big Macs gotten smaller at all? This was back in the 90's btw.
You used to be small. Now you are big. Just like if you go to your old primary school it will look small.
McDonalds have repeatedly stated that Big Macs have not changed size. Whether that is true or not, I do not know.