Winky Faces

Problem:     f(x) = 5x - 20; x = -2, -3, 4, 7.

Student raises her hand.

Me: "Yes, ma'am?"
Student: "Uhh... why is there a winky face in the middle of this problem?"
Me: "What are you talking about?"
Student (as she points to the semicolon on her paper): "Right here, there is a winky face in the middle of my problem."
Me: "Oh hunny... that is a semicolon. It is just there to separate the function from the other numbers."
Student: "Maybe that is what you people call it, but we all know that it is a winky face."

And there you have it, my dear friends. We now have winky faces in math class. I am just wondering if they see hash-tags on their classwork assignments instead of number signs (ie #3) if they will be more willing to complete it them ;)