When someone or something thinks they are the best thing since sliced bread because all of their opponents are easy, then get their feelings hurt when they lose to a real opponent. Refering to the Florida Gators loss to Arkansas during their 2009 football season.
Man 1: "I bet I could beat you in checkers!"
Man 2: "Dude you only play against your little sister. I would hate for you to have to get Tebow'd in front of your mom."
Man 1: "Good point, I'll practice some more first."