> > > Why on earth would someone eat a peanut butter and jelly sandwich with the peanut butter slice on top?! That's just wrong, and it's also upside down.
> >
> > Well, you see, it's a simple matter of elementary physics.
>
> But what's to stop you from flipping the sandwich over once it's together?

Further support for the "PB on top, then flip to have PB on bottom" school:

Jelly of any sort is likely to soak through the bread and make a mess on whatever is underneath it. If the PB is on the bottom, however, it creates a thick protective layer to prevent gravity from making an oozy mess.

Don "Assuming you like runny jelly and/or permeable bread" Monkey