Let's start with a perfect example of The Bump. Next time you go to a McDonald's, order a sandwich and drink (but no fries) and see what happens. You will personally experience a simple, ridiculously easy, million-dollar bump.

If you place an order that doesn't include french fries (chips), the counter person will immediately and cheerfully suggest some hot, delicious fries. Just the mere suggestion causes a certain percentage of people to go ahead and order the fries and of course