Covalent Bond Types are Like Eating in a Restaurant

I love the analogy.  It makes the concept of electron-sharing really easy to remember and to understand.  In my mind, I have converted "non-polar" to "no pickles"  because I would be more willing to give half of my cheeseburger to my son if the cheeseburger had no pickles.  If it has pickles/"polar" my son would take my whole cheeseburger and give me little in return.  Coordinate covalent bonds are different, you just give it up to another in need with no expectation of sharing.