No - nothing to do with a cheesy burger joint. Nor tennis. But church.
Jesus tells us (and sets the example) to be joyfully willing to be a servant of the church. He was the one who washed the disciples' feet. He was the one who gave up his life for our sake.
It never comes naturally to serve others, because we all think our needs are greater, and that our time is more precious than others'. But the funny thing is, the more we learn joyful service, the more we find we've got more time and more energy. Try it this week!