This tastes like cardboard!
I made some instant mac and cheese for the kids this afternoon. Diya says to me, "Ms. S. says this stuff tastes like cardboard." Avi was busy eating his own little bowl, all of a sudden he goes to a cardboard box (we have a couple lying around since we're fixing the powder room) and starts chewing on it. "What is wrong with you, Avi?" "Nothing, I just wanted to taste the mac and cheese and the cardboard box to make sure that that was indeed the case!" "And did it taste the same?" "No." That settled that dispute. We had something to prove our case immediately.
Thought that was pretty funny!