Bob Ross made brush cleaning a signature moment on The Joy of Painting, tapping the brush against a container or easel to remove paint between colours while talking calmly to viewers. Clips of that ritual later circulated online as a standalone sound because it was instantly recognisable, even without his voice, and it fitted the show's gentle, encouraging tone. Creators still reuse the short tap today for painting videos, relaxing compilations and light-hearted resets, where a single familiar noise can signal a fresh start without needing any explanation.