Then one day, this kid named Darren Walsh touched the Cheese with his finger, and that's what started this thing called the Cheese Touch. It's basically like the Cooties. If you get the Cheese Touch, you're stuck with it until you pass it on to someone else. The only way to protect yourself from the Cheese Touch is to cross your fingers.

Diary of a Wimpy Kid (ed. Abrams, 2012) - ISBN: 9781613122433