Rubik's cube

2005 marked the 25th anniversary of the Rubik's Cube. In deference to this reminder of our childhood, David and I got Jonathan a Cube for Christmas.

We are proud to announce that one of our children has actually figured out how to solve the Rubik's Cube (and, no, it does not involve taking it apart and putting it back together). We are equally proud to announce that one of our children has figured out how to drool on a Rubik's Cube. We leave it up to the reader to deduce which child has performed which feat.

However, here's a clue for you: