The unavoidable "Mega" chip on a
plate of nachos.
The chip is usually laden with
cheese and has a majority of the toppings stuck to it. It can consist of one or many
chips fused together.
Someone always has to eat it, however when the plate of nachos is worked down to the motherchip, everybody hesitates to see who will grab it. The person who does usually has to apologize for taking it.