Who is the teacher here?

Yesterday, my media specialist and I introduced vocaroo.com to our students.  I was, as per usual, equally excited and nervous to try something new.  As we launched into our carefully crafted Anticipatory Set, Screech!, the students proclaimed they'd already used the program and it is super easy.  My colleague and I looked at each other.  "Great!" we exclaimed.  Wow, just when I think something is going to be so tough, I learn - no, not so difficult after all.  Thanks, kids, you schooled me again.