Does this dozen eggs look odd to you? They should, so look again if you do not notice what is wrong with them.
Once I formed a hypothesis about this, I asked my wife and kids if they could think of some reason for a package of eggs being random sizes. Having never purchased eggs, the kids had no clue. But my wife and I knew: When you buy eggs, you check for broken ones and take a whole different carton if there is one broken one. Some enterprising clerk must have consolidated unbroken eggs from different packages so that one broken egg costs one egg and not a dozen eggs.