When Markers are Left to the LIttle One

I was making dinner the other night and Jacob said "mommy, I am a tiger, do you like my stripes?" He had been coloring on a white board with dry erase markers.  He tried to make himself into a tiger.  He only got this far before I stopped him.  He was so mad I wouldn't let him finish.  He just wasn't done yet! Oh well...maybe another time!