Bank Of Music & NatureWon Sounds Intl presents the world's best 4/20 Mix dubbed BUBBLE CHALICE.. who20 || Four-Twenty is used to refer to cannabis or the act of smoking cannabis. 20th April (abbreviated 4/20 in the US), is considered an occasion for smoking or celebrating the smoking of cannabis. "thousands of cannabis smokers converged on Hippie Hill for the annual 420 celebrations"