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4.
53
a number that haunts the town of aledo texas and has become a part of everyday life for aledoians. Some say the number is extremely unlucky
the girls basketball team lost 53 to 60!!! OMG!
by jefferson steeleflex March 19, 2008
 
1.
53
A slang term for a custom car in NASCAR The Game 2011. Infamously, no one wants to race with one of these due to the massive lag they cause. Because no other players can see custom cars in a race, they are instead shown as a yellow #53, hence their name.
Player 1: (Dissapointed): Shit, look at all these fuckin' 53s in here.

Player 2: Yeah, man, we're screwed. This race is gonna lag like hell. I'm dashboarding it now and savin' myself the trouble.
by OneMileFromGlory April 16, 2011
 
2.
53
the number of the black crayon in a crayola box. in wich refers to the "black man" as a dehuminizing word for peop of african decent. commenly used by caucasians or law enforcement.

Common term for an "african American." Has been a southern tradition for many years.

"Hey you 53, get over here!" exclaimed the officer. "I'm in Sagaponack Bitch."

Sagaponack bitch: You could use this slang in any altercation with your significant other. It simply states "Leave me the fuck alone."
apb on all 53's with jeans' shirt' and shoes.
by rick j August 26, 2006
 
3.
5'3
the average teenage height. if your taller that 5'3 stop growing and if your shorter than 5'3 keep growing.
dang! that 5'3 girl can get any guy she wants!
by lskfdoisdnwd May 21, 2009
 
5.
53
This variation of the 69 happens when a girl goes down on a guy and he sticks his pinkies up her nostrils.
I surprised dat bitch with the ol' 53 last night.
by Jessica Goatfacekilla August 17, 2006
 
6.
53
gettin' some all the time
i just got it last night and the night before
by dj January 06, 2004
 
7.
5.3
average length (inches) of a mid-European penis (eg. German)
The Irishman's average 6.5" penis outstretched the German's 5.3" weapon
by Jake January 10, 2004