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1.
500
500 days is a typical term for a guy/girl relationship. Came in use after "500 Days of Summer" movie.
- You're dating him almost a year! Do you want to marry him or something?

- Gwad, no! He's just another 500 guy.
by Ferdinand Trussoff October 12, 2009
 
2.
500
Old school baseball game where one person fungoes (that is, throws the ball up and hits it) the ball to a group of people who earn points as follows: 100 for catching it on a fly, 75 on one bounce, 50 on two, and 25 on three or more. The first one to 500 points is the winner, and assumes the fungo role.
Cecil: Hey Booker, let's get Evel, Bjorn, Mookie, and Dusty and have a few rounds of 500 down on the corner lot.

Booker: Ok, I'll bring the bat, ball and Stroh's

Cecil: Sounds good. I'll start off as the hitter.

Booker: That's fine, since it'll be the only chance you'll get!

Cecil: Ok. See you there.
by ChicagoTim July 18, 2009
 
3.
1. Breast implants, filled with 500 mL (cc) of saline or gel
2. Big boobs.
3. Headlights.
4. Knockers.
5. Big Impressive Tits.
Shirline's 500s walked into the room a full second before she did.
by William Dean A. Garner September 11, 2003
 
4.
500
A term for breaking even, used in gambling and sports win/loss records.
Our team went 500 because our record was 16-16.
by Sharzak September 29, 2005
 
5.
500
A less overly exaggerated version of a million
I've seen Star Wars 500 times!
by SWFan29 January 30, 2010
 
6.
500
The ultimate goal on GameFAQs. To get a topic to 500 posts is the epitome of pure awesomeness.
Topic: Post here for 500

*gets to 500*

The TC is now a god.
by NM3k June 03, 2007
 
7.
500
Mercedes Benz S500 - Luxury Car
"Sittin' in my 500 on 20's sittin' low..." ~Ginuwine
by Jesus December 02, 2004