The power of "Fatty!"

The Return of the King - Burger King is resurrecting a dubious icon. Why? By Seth Stevenson

From the article:
By the way, the Double Croissan'wich (with two meat portions and two slices of cheese) is officially classified an "indulgent sandwich" in Burger King terminology. "Our research showed there was space for a larger, more indulgent build," says Paul Macaluso, Burger King product manager for breakfasts. "Our customers were ready for it." In other words: Have it your way, fatty!

That's the second time I've heard "fatty!" used like this in the last 24 hours. [Other was, "Shut your cakehole, fatty!"] Makes me chuckle every time.