Rule #151 (for those in business suits at Qdoba): If I were you, I wouldn’t sit at the table behind my toddler. There’s a good chance he will rub quesadilla on your nice suit.
I am the Meanest Mommy in the Whole Wide World. I am forced to make rules & observations that I never knew would be necessary before I became a parent.
Rules by the Meanest Mommy in the Whole Wide World 
This is exactly why we urge the seating person at all restaurants to give us a table where my 4 y.o. can be seated with his back to a wall.