The Weird Al Show S01E06 - One for the Record Books

Harvey gets too close to the microwave, and turns into a giant mutant hamster. Harvey breaks the world record for largest rodent. Al is jealous and tries to break some world records himself. He can't. No matter how hard he tries. Later, Hanson comes over to see Harvey. They begin taking pictures. The flash from the cameras shrink Harvey's radioactive DNA, and he becomes smaller again.