Pearls Before Swine by Stephan Pastis for August 09, 2010
Pig says, "You look grumpy this morning." Rat says, "I am." Pig says, "Did you know that it takes 43 muscles to frown, but only 17 muscles to smile?" Rat says, "What's it take to pummel a perky guy?" Pig says, "You may not be a morning person." Rat says, "I am now. Don't move."