You will Watch The Grim Adventures Of Billy and Mandy Season 6 Episode 6 online for free episodes with HQ / high quality. Stream cartoons The Grim Adventures Of Billy and Mandy Episode 66 Herbicidal Maniac: When General Skarr tries to get rid of a weed in his otherwise perfect garden, he asks Grim to use his scythe to do the job. However, Billy drives a lawn mower and he ruins the garden; also, the scythe’s magic accidentally shoots Skarr, transforming him into a plant-like creature. Then, using his new plant powers, Skarr rebuilds his garden, and tries to exact revenge on Billy by throwing a party, and then attacking him. In the end, Skarr gets mulched by a helicopter rotor, but he is reborn as a small weed.