It is. I've been known to eat ten or eleven slices.... when a 16" large is cut into 8.
Unfortunately (or fortunately, depending on which way you look at it), that won't ever happen again, as I had my gastric bypass surgery a month ago. Down to 291 lbs from my high of 337 before the surgery. Four more weeks until I can even attempt to eat any real "solid" food, like a hamburger. At that point, I won't even be able to eat a single slice without throwing part of it away.
Doc's goal for me is 221 lbs. I'll be a friggin' Ethiopian at that weight.