564 

text message 564 means "sweet dreams baby"

she sent him a message 564 to wish him "sweet dreams baby"

564 by Tinaisms November 5, 2006

42-42-564 

Whenever you need him, knock on death's door

Soul Eater, Episode 1 - Resonance of the Soul...

Maka: "The number to the death room is... 42-42-564 (shini shini koroshi)

42-42-564 by mmergan June 25, 2017

37-564 

The license plate number of the Shinigami GTR in Initial D, meaning "minagoroshi" or "massacre" in Japanese numbers

37-564, massacre, that license plate number really shows you how dangerous the Shinigami GTR is.

37-564 by anonymous December 17, 2020

5647382910

The ultimate symbol of boredom in which you type the numbers on the keyboard from the middle outwards. At this point, you need help.

Tom: "I'm bored...might as well type '5647382910' into my keyboard."
Bill: "Why...."

5647382910 by HellKing699 March 13, 2018

5647382910tyrueiwoqpghfjdkslavbcnxmz

A test of true boredom. You've explored the vastness of Urban Dictionary's qwerty variants and have landed here. I mark this moment, November 17th, 2022, at 10:25AM EST, as the day I discovered a new qwerty variant. If any qwerty explorers have found this, I apologize. You must continue the search on your own. Good luck.

5647382910tyrueiwoqpghfjdkslavbcnxmz...

5647382910tyrueiwoqpghfjdkslavbcnxmz by anonymous November 17, 2022

5647563856295610 

A random number combination that repeats 56 a lot

They would never think of 5647563856295610

5647563856295610 by pseudo-dead November 1, 2020

5:64 

A time that is used very often. it is always the time on the daily clock but when you hit the snooze button it is 5:65

also the number on the right is the Minecraft max blocks in your inventory

"what time is it" says Josh

"it is 5:64, Josh" says Tom

5:64 by the guy who takes content January 13, 2021