In India, 420 (In Hindi चार सौ बीस “Char-soo-bees”) refers to a person that breaks the Indian Penal Code Section 420 which deals with cheating and dishonesty. It basically means a trickster or a con man.
“Have you met Anil. He was nice to me.”
“Stay away from him. He is a 420 (Char-soo-bees.)”
-420 is to get baked or smoke marijuana at 4:20(more so stoners)
In the year 2020 The month of april(because it's the 4th month in 2020) is celebrated for the whole month of 420.
-Bro its 420 for an entire month!
cop: we got a 420
prisoner in the back seat: what
cop: marijuana
prisoner: get me some