I love this story! I guess it's technically not a dog joke, but it's worth a laugh and we've all been behind this woman in line. The woman at the supermarket checkout was giving the clerk a hard time. As her audience in the waiting line increased, she became more abusive. Finally, the patient clerk came to a dog's flea collar. The checker asked the customer if she was aware that the package had been opened. "Of course," the woman snapped. "I opened it. You can't expect me to get it home and find out it's the wrong size." A voice from the line spoke for all of us: "Wear it in good health."