Boy, that guy is really mad.
Ben’s explanation of the drawing: the top guy, and the three colored guys at the bottom (with the flat-bottomed heads) are Mr. Colors: Mr. Black, Mr. Red, Mr. Blue, and Mr. Green. The round-headed figures are Mr. Black’s workers. Mr. Black is mad because his workers aren’t doing what he told them to, especially the two workers at the bottom who are playing with the Mr. Colors.