Dawn of the Dopes

Since the first day meals at the buffet involved shuffling to and from your table trying getting food for yourself or the kids or a friggin spoon which they didn't for some reason set the table with. 

Then there are the other customers. Shuffling about, sometimes without a tray even, starring at the food and the label above it.

So they shuffle up stare slack jawed at the random meat, the up at the sign 'meat' then back down at it like they have never seen it before. Why does it take more than a few seconds to decide if you want it or not. 

Then someone might drop a glass. They al freeze and shuffle over to have a gawp..

Change over day ramps it up. Increases the numbers of pale zombies shuffling about gormlessly looking at food like its surprising.