(about $150 before tax) at in and out burger they call the double cheeseburger a double double (or 2×2) and you can add patties and cheese as you want.  a 5×5 is five patties and 5 slices of cheese.  100×100 is about $150 of add on’s to a double double cheese burger.  and is awesome.  if you live in cali, nevada, or texas where they have in and out, treat your friends to a 50×50 or 100×100 and blow their minds 🙂