Place this clip at the payoff of a cleaning or painting montage, after the messy before shot and before the clean reveal. Start with cartoon chase music under the fast scrubbing, cut it for this line, then follow the reveal with a bright success sting.
About this sound
Bob Ross delivers his signature line in a calm, cheerful voice over about four seconds, saying he will just beat the devil out of it while cleaning his brush. It feels wholesome and oddly satisfying, turning a violent phrase into gentle encouragement. The clip comes from his television painting show The Joy of Painting.