http://www.seattlepi.com/comics-and-games/fun/Mark_Trail/2013-09-19/
Is Mark getting up out of his chair to punch Johnny Walker for calling wildlife stupid? I can't wait until tomorrow. Pow!
This strip is a great example of scarcity and opportunity cost. Just draw this picture in class and student discussion will take care of the rest of the 50 minute class session:
And as willwheels, if that is his real name, points out:
... every sentence in Mark Trail this week has ended with an exclamation point.
