Pearls Before Swine by Stephan Pastis for October 24, 2012
Goat: Here's that book you let me borrow. Thanks. Rat: What the @*#@? You underlined sentences. Goat: Oh, yeah, sorry. I'm one of those people who likes to underline as I read. It's just pencil. Though you can erase you if it upsets. I sense it upset him.