Pearls Before Swine by Stephan Pastis for February 19, 2010
Rat says, "You ever notice how old people sometimes have tennis balls on the bottom of their walkers?" Goat says, "Yeah. So their walkers can glide easier. Why?" Rat says, "Well, lately I've been playing a lot of tennis and every time I hit the ball in the nearby ivy, I think I know right where it is, and I go and look and it's not there." Goat says, "Please don't tell me you think-" Rat says, "Those geezers are stealing my tennis balls!!!" Goat says, "Please... please stop talking." Rat says, "I'll bet they hide overnight in the ivy and wait."