Nonsense & Foolishness

I have heard the principal use the terms nonsense and foolishness to describe the students' behaviors.  They are often the best (and only!) words that can describe students' antics.

Today a girl took a post-it note from my desk and wrote "Press the Button" on the top.  Below, she drew a circle and shaded it in.  She then put it on her forehead so it extended down, nearly covering her eyes.  When other students walked by and touched the "button" she would say loudly, "Honk, honk!"  Is this nonsense?  Is this foolishness?  Is there some mathematical value to this exercise that I clearly missed?!  (No, she didn't get in trouble because it was at the end of the school day and more annoying - to me - than disruptive to hear her honking!)