Nobody wants to check out a library textbook just to see questionable food stains on every other page. Nobody wants to put their head down on one of the tables and have bread crumbs stuck all over their face. And absolutely no one wants to throw away your leftovers. 

No, I’m not forcing you to sacrifice your precious tutorial hangout time. All you have to do is reposition your perpetually hungry friend group two hundred steps away from the library to the student center, where you’re actually allowed to eat. Wherever you choose to eat around campus, actually pick up after yourself so other people don’t have to.