Those are some pretty easy to answer questions?

• for the same reason a kitchen island is in the middle of a corner
• it’s a pallet of eggs, someone dropped it there with a jig
• it seems one side of the corner has a barrier, the pallet attemps to complete it and prevent people from going that way (a cash register might be there). Or the person dropping it wasn’t careful
• only bleached eggs need a fridge, most of the world doesn’t bleach their eggs so they can stay on the counter.
• why not 15? Base 12 makes sense because it’s a highly divisible number (1/2/3/4/6/12) so a lot of stuff are dozens or half a dozens, but there’s no reason eggs need to be. It likely has to do with “the packing problem” which is a difficult math problem of how to shape stuff so you fit the most in a truck load
• other countries have other languages, and even sometimes completely different alphabets that resemble or share the same roots as English
• you are experiencing another culture.