Top Definition
640
A feeling of sketchiness one experiences involving the use of cannabis. May also be used in the gerundive tense.
Dude we reek and my mom is about to pick us up, this is too 640, why did we do this?
by sketchball123 October 07, 2010

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640
This is alot like 420,but 640 is the time a group of students who call them selfs the pearland punks meet in the morning before schoool to get drunk in the school parking lot. The drinking normally includes energy drinks (monsters) and coconut rum.
Christi : Are you ready for that test 1st period
Jennifer: no,im going to 640 it and see if that helps me on it
Christi: Good call can i join ?
Jennifer: Sure, you know where i will be.
by Jennifun January 30, 2009

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640
The name for any location where cowards hide from the wrath of rival gangs.
Jamaal: Where the fuck did those pussies go?

Tyrone: They fled the bar as soon as Jordan got cracked in the face!

Jamaal: Where did they go? I'm not done with those guys!

Tyrone: Probably back to 640 to stay safe until shit blows over.

Jamaal: Fuck that mother fucker, let's rush 640!
by SliceMomboBin October 28, 2008

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