South Park 8x01 watch series online

South Park: Good Times With Weapons

The boys buy Martial Arts weapons from the county fair, and turn into Ninja warriors (complete with Anime-style animation). However, when one of Kenny's ninja stars gets thrown into Butters' eye, the boys must do the only logical thing possible, dress Butters up as a dog and take him to the vet. Their parents cannot find out that they were playing with weapons.