I know a usually precedes e and o, but does e usually precede o? I'm sure we are all insane, but if people were saying "oranges and apples" we'd all be having sex with our siblings insane.
You make me laugh. Oranges and Apples become siblings??? lol I cannot fathom how you came to that conclusion.
Salt and peppers order is determined by the objective importance of each spice. Peppers awesome, but it's not a critical mineral for nerve transmission. Pepper is the pussycats and salt is the Josie.