Giantic hamburger

Last night I went for dinner at a MacDonald's near the hotel.  They had a new sandwich, I'm not sure it's a seasonal thing or what, that is like a Big Mac, but with two patties of meat in each layer, four in total.  It also had one slice of cheese.  It was so big I could hardly open up my mouth big enough to take a bite into it.  It tasted better than the regular Big Mac, but still doesn't beat Burger King's Whooper.  IMHO.