The period of time right before you're about to get high.
Guy: "Eyy man, you guys smokin' green over there yet?"

Guy:"Its 4:19. Come on over and we can start this party"
by iplayxbox October 4, 2011
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Got a minute? ... Yeah. One minute 'til 4:20. Or 4/19, the day when everybody buys their stuff for 4/20.
It's 4:19, almost 4:20. stoner's time
by AANK November 12, 2005
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Bicyicle day, the day that Albert Hoffman, the first synthesizer of LSD and had the first recorded trip ever, The term comes from Hoffman going on a bike ride back to his home from a lab in Basel, Switzerland after ingesting 250 ug of the substance (250 micrograms). He would go on to describe the way he felt while tripping balls
Don’t do too much acid on 4/19 or you will get hppd (hallucinogenic perception disorder)
by 7even10en April 22, 2022
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the ship that you always fly in on halo
echo 4-19 on aproach...echo 4-19! iv'e lost her...
by kennie jak May 11, 2003
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A day we regret where the Notre Dame Cathedral was on fire and we had to pay taxes.
by f0rgot_p@$$w0rd April 18, 2019
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