A distraught dog owner called a vet pleading for an immediate appointment. He explained that his dog had a large growth or swelling near the corner of its mouth that had appeared to grow overnight, so I told him to bring the animal over.

When the man came in with his dog, the vet examined the animal as the man stood by, anxiously waiting the vet's opinion. At last the doctor turned to him and asked, "Do you have any children?"

"Oh my gosh, is it contagious?" the man gasped.

"No," the doctor answered. "It's bubble gum."