6.4 

Used in rap songs , usually means a 64' impala , but also it can mean a dodge with a 6.4 392 engine .

"Cruisin down the street im my 6-4"
Or "I was cruisin in a 6.4 with all of my hoes" because and impala 64' cannot fit 4 people

6.4 by ,,,,,,,__________,,,,,,, April 25, 2019

6.4 

Reference to Tiananmen Square massacre of June 4th, 1989. Using 6.4 on the internet is enough to get you noticed by the Chinese government. (Hey guys!) Over 10,000 unarmed students were massacred. Orders were given for no survivors.

Q: Why does the Chinese government hate “6.4?”
A. Because it reminds the world of what the Communists are capable of doing to their own people in a single day, just for wanting liberty.

6.4 by Gsfnn June 4, 2020

6.4 

The number of inches in the world-average penis size.

Yes, people really do have dicks that small. Pity them.

6.4 by Gumba Gumba February 25, 2004

6'4" 

Also known as the 6'4" , a higher race of human being who descends from the nephilim tribe and is greatly respected by all others. They generally tease or physically abuse shorter people such as dwarfs and midgets and earn street cred through playing basketball.

John: Hi Tim whos it going.

Tim: Hi, I am 6'4"

John: Oh, you are the greatest I see.

6'4" by PEG96 December 18, 2012

6-4 

64' impala, the best car

rolllin in my 6-4
-snoop dogg "let me ride"

6-4 by white pimpness August 14, 2003

6-4 

a 1964 Chevorlett impala, populerized by Eric lynn Wright aka Eazy-E, the Ragtop is a Chevy 6-4 ss convertable soft top

Cruzin down tha street in my 6-4 jockin tha bitches slappin the Hoes - Eazy-E

6-4 by Cray-Z Positive November 15, 2007

6 4 

a 1964 chevy impala

i was hittin switches in my six fo

6 4 by Ben Dover April 14, 2003