An amount of fast food exceeding the groups already ridiculously large late night drive through order. It's necessary to ensure that noone's munchies are left unfulfilled.
"Dude, I know there's only 4 of us and 10 cheeseburgers, 8 large fries and 6 milkshakes should be enough but I better order some buffer food just in case."
A meal prepared in such a way that its presentation and/or appearance will generate its own conversation, thereby eliminating awkward communication among incompatible guests.
Imma fix a series of buffer food courses for tomorrow night's dinner party, and hoping like hell that people will focus on the food instead of pushing each other's buttons.