64.0 

It is a game. It has 12 levels:

64.0
64.1
64.2
64.3
64.4
64.5
Mind Twister
superpower
Sakkijarven Polkka
Get Out There
Avast Your Ass
endless

64.0 by Impostor (sus) March 21, 2021

6-4 in your 5-0 

This phrase references when someone needs more destruction in their relationship. The six-four comes from smashing a six-string guitar into a four-string bass guitar. The five-o references five attempts in a relationship at "getting some" and in turn getting "o" or none.

If you take your girlfriend out five times with no action, your friend could say, "Man, you need some serious 6-4 in your 5-0." Conversely, if you take your boyfriend shopping five times and he neglects each time to buy you a cinnabon, your friend could say, "Girl, you gotta get some 6-4 up in your 5-0." The form of destruction could refer to anything, not just musical instruments smashing together. For instance, you could drive your car through your girlfriend's dog's house (taking out the dog first of course). Or you could drop a road flare and some firecrackers in your boyfriend's garbage disposal.

6-4 in your 5-0 by Ambrose Thunderfingers January 25, 2009

640

Uptown hood in DC

Behind Tha Black hole is where it's at 640 niggas

640 by 202SE DC June 20, 2017

640k logic 

Short sightedness based upon the assumption that a given quantity exceeds any possible future demand. Originated by the quotation, "640K RAM ought to be enough for anybody," commonly attributed to Bill Gates.

Statement: "The country will never need more than a ten digit phone number."
Response: "That is totally 640k logic."

640k logic by Vernon V May 27, 2008

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?

640 by sketchball123 October 8, 2010

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.

640 by Jennifun January 30, 2009

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!

640 by SliceMomboBin March 6, 2009