I learned how to solve a Rubik's cube a while ago and got a 2*2. I told Dad that there is a trick to 2*2's and showed him that if he keeps repeating certain steps then it would eventually solve. Then I showed him that it works, and asked him if he wants to try. Dad said yes, and I scrambled it.

Now when I showed him that it works, I "scrambled" the Rubik's cube first. I "scrambled" it so that if I do the steps it WILL, solve, but for Dad I didn't. So Dad sat there for a minute doing what I showed him until Mom interfered.  It was really funny, especially since Dad believed
my trick.