Z-Y-X-and-W,V-U-T-S-R-and-Q. P-O-N-M-LKJ-and-I. H-G-F-E--DCB-and-A!

Hilarious fun. I think our son was about the same age when we first heard the reverse ABCs on a Kiddie CD. After that, it probably took a few months for that song to get bumped off his internal playlist.

(If I ever get pulled aside for a roadside sobriety, I'm passing that "backwards alphabet" part for certain.)

As for improving vocab and spelling, I bet that your son will benefit most by simply continuing his love for reading.

Being offended is a natural consequence of leaving the house. - Fran Lebowitz