I like how it makes the burgers look more "laid back", like some cool sunglasses-wearing skater/surfer dude leaning back, or a pin-up model whose pose invites you in. Standing up straight is for the man and that's not how I want my burgers to be.
These burgers aren't working for the man
No idea why we're discussing burgers or the man, but pretty funny to learn the phrase goes back to freaking BCE