Top definition
Rule 420 states: When the time is 4:20, regardless of AM or PM, one has to go wild.

Guy: Dude its 4:20
Guy 2: *Goes wild*
by PremierAlan December 04, 2016
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2
at 4:20 (PM or AM) one must smoke any marijuana substance available. (this includes, but is not limited to, eating, snorting, fucking, cooking, etc.)
Girl: hey what time is it?

Guy: its 4:20 PM

Girl: i think im gonna go outside and smoke a cigarette.

Guy: Rule 420 bitch!
by GANJAGANJ December 18, 2008
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