One of my nephews turned 13 this year. He has already exhibited the traits of a teenager. He no longer tells his mother he loves her in front of his friends. He walks into another room when his cell phone rings. And of course, he knows everything.
Let me tell you how difficult it is to design a card for a teenage boy. I don't know that I succeed but at least he said, "This one pops up." It could be worse. He could have said, "This sucks."
It's the little things really.