Explanations I've heard:


- Bob Marley's birthday is on 4:20. LOL, I argued with my friends so much becaues they insisted this is right, then we researched marley and sure enough I won the argument:smokin:.

- The L.A. Police force's code for a marijuana offence was a 4:20 (first one I heard).

- Bob marley died at 4:20

- It's a day for dopefiends to celebrate Hitlers birthday, HAHAHA no shittin' I actaully heard this once.