Welcome to your fifth grilled cheese sandwich observation lesson. If you missed our first lesson on 2008.08.12, second lesson on 2008.08.21, third lesson on 2008.11.04 or fourth lesson on 2008.11.14, feel free to refer back to them before proceeding. And as usual, feel free to take notes.

As far as I know this is not a grilled cheese sandwich, and quite frankly it concerns me that you think it is. Please seek counselling.

This is not a grilled cheese sandwich
Photo of a Singapore NEL trainset by Oahiyeel on Wikimedia Commons