Pearls Before Swine by Stephan Pastis for February 28, 2009
Rat says, "Woo hoo!" Pig says, "What?" Rat says, "I just scoured the 'Guinness book of world records' and noticed there is no record holder in the category of 'Most consecutive times slapping rotund friend in the face'!" Pig says, "Woo hoo!" Pig says, "I'm having second thoughts."