Find a Piece of Tape Please!

In my gym, I have my students when we are doing exercises to stand on a piece of tape, so they are spread out.  Sometimes we have some kids who forget where they are suppose to be.  Yesterday was one of those days.  I am always saying "find a piece of tape please".  Well, one of my students took it a step further.  After about 10 seconds, we are ready to begin our exercises, when on the 4th graders comes up to me in front and hands me a piece of tape and says "Here's a piece of tape".  Really?  Ok, next time I will be more specific.  Lesson learned.