I was reading the story of Jesus feeding the five thousand and after he feeds them they all hunt him down and follow him. But Jesus says they follow him only because he fed them and they are expecting more food. He teaches them "I am the bread of life" and they all look at him like "Okay. when are you going to give us more food?" Then he tries to teach them about Moses giving their ancestors mana but he will give them "living bread" and they start whispering to each other "How can this man give us his flesh to eat?" When they realize he isn't passing out free food they all disperse.
I know we totally do that today, in two ways. First of all, we relate to these people in a very literal sense. Often (especially as college students we go to things because there is free food. So we ned to think of other lesson this teaches us. To question our motives for following Christ. Are we going for the food? For the social experience? To look like a good person? Our works aren't going to do us any good unless we are following Christ for the right reasons.