420 is synonymous with weed but it's also that sick fuck Hilter's birthday. He's non too pleased when he finds out.
Cheech and Chong Explaining 420 in an Ancient Aliens style video. You gotta laugh man.
This short video explains 420 and how it got affiliated with weed incase you were wondering why you keep seeing it pop up around you...or if you know the affiliation but wondered how it started then wonder no more.