Pearls Before Swine by Stephan Pastis for November 24, 2011
Zebra: What are you reading, Rat? Rat: Chemistry book. I'm learning all about valence electrons. They're what determine if one element can bond well with another. Zebra: Why do you care about that? Rat: Because knowledge like that has practical uses, you moron. Uses I can pass on to everyone I know who may be dealing with difficult interpersonal issues. Pig: It's not you. It's your valence electrons.