Feast on Fatburger & Buffalo’s Double XXL ($13.50 for regular, $19 for “fat”) burger which consists of lettuce, tomatoes, mayo, mustard, relish, onions, and pickles. Be sure to add on cheese ($1) and beef bacon ($1) as well! You can also top up fries and a soft drink ($5.50 for both) if you want to make it a meal.