The Roll-Over Restaurant

Warning: This idea may have actual merit. The authors do not claim responsibility for posting a realistic or otherwise reasonable idea.

Ever been taken to a table at a diner only to see the busdude take away some plates half full of side dishes? Ever think about asking them to leave it behind as an appetizer? It's time to start a new kind of restaurant for all of us dirty kids who don't care about germs and hate seeing all that food go to waste!

Consider the assumption that all parties have equal hunger and order meals of equal sizes. Think about it: One party isn't super hungry and leaves 10% of their meal behind. The next group eats that 10%, and so their hunger is diminished by the same amount, causing them to leave 20% of their meal behind.
The effect snowballs, and every 10 customers, someone gets a free meal! We all get to enjoy a free appetizer (except for that first party, who might receive it gratis for being part of the great cycle), no food gets wasted, and people keep coming back both for our delicious cuisine and in hopes of winning that theoretical every-10-customers lottery! Of course, not everyone has the same hunger, or orders the same-sized meal, but that thought experiment would occur in less-mathematically-precise, less-repeatable ways!

If you think this is gross and unsanitary, you probably won't frequent this restaurant. If you are from the health department, please don't come to this restaurant. But if you don't like seeing food go to waste, this may just be the place for you.