Either the service was awful, the tipper is a dick, or the tipper has OCD and always needs to round to the tenth digit. His illness makes him a social pariah.
If you're from Western Washington (the Seattle area, more specifically) this receipt might actually look appetizing. Before you unleash the deluge of middle school gay jokes, let me explain that there is a burger joint chain in Seattle called Dick's Drive In. Also worth mentioning is the fact that they have, quite possibly, the best fast food burgers in America. So if you showed this receipt to a Seattleite, don't be surprised if they start drooling.
A waiter at a restaurant in Stockton, CA needs a few manners lessons from some local third graders, because they apparently know more than he does. Also, 50 percent? That's the best you can do? Because this has free meal written all over it.