Lesson not learned

Piccolo taught Gohan how to dodge, apparently he didn't think his father would test it.

This was taken from a fan comic, called Cha La. I just found this image to be hilarious

Disclaimer: The pictures used are from the show Dragonball, Dragonball Z and Dragonball GT and are owned by Akira Toriyama, FUNimation, Fuji TV and Toei Animation. THEY ARE NOT MINE.