CSI 

CSI: Crime Scene Investigation, a pretty solid prime time drama series that has its ups and downs. In its fourth season right now, the show has spun off two TV shows, CSI: Miami which is in its second season and CSI: New York, coming out this fall, two PC games, and even a board game.

According to CBS, CSI: Crime Scene Investigation is the most watched drama. The statement is also backed by TV ratings.

CSI by angelfish April 28, 2004

CSI 

Customer Service Indian

I was on the phone with Microsoft's CSIs for 4 hours trying to reinstate "OMFG PWN MY BALLS" my gamertag.

CSI by ScottyQ November 9, 2007

CSI 

Crime Scene Investigation (often refering to the television show)
Found on shirts, hats, etc: Certified Sex Instructor (like FBI: Federal Bureau of Investigation - Female Body Inspector)

ex1: did you see the new episode of CSI last night?
ex2: I bought a new shirt this weekend that says CSI

CSI by shortygurl October 1, 2007

CSI 

Cat Smack International

CSI (Cat Smack International) is a degenerate group of pricks who abuse animals and put the videos online. They need to get a life.

CSI by Cat Kitty Pet November 7, 2007

CSI 

Slang for having sex with woman who has her period because after you are done having sex, you will leave blood droplets on the sheets or floor. Thus leaving evidence behind!

I approached my girlfriend for sex, and when she said she had her period, I said I was ok with some CSI action.

CSI by MIF's baby February 25, 2007

CSI 

1) Crime scene investigation- a television show about crime solving.

2) The origianal M-powered BMW

"Let's watch CSI"

"BMW M6.35 CSi is an old but nice car."

CSI by Gumba Gumba February 25, 2004

csi 

1. A cool tv show with the hottest guy(Grissum) ever! You rock my sox Grissum!

I luv CSI it has cool dead people!

csi by Rock On you mofo May 14, 2005