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

by shortygurl August 03, 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.

by Cat Kitty Pet October 22, 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.

by MIF's baby February 23, 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."

by Gumba Gumba February 25, 2004

CSI

1. cool fantasy TV show about dead people and maggots and stuff
2. Boring gross job

I wanna be a CSI like on CSI! ...Ewwww

by Amanda is Naff July 09, 2003

CSI

cool sexy investigators

hey did you see those CSIs last night?

by UD is my bible January 05, 2009

CSI

Crime Scene Investigation
Crime Scene Investigater


also is the name of tv shows:
CSI: NY, CSI: Miami, CSI: Crime Scene Investigation

"i want to be a CSI"
"i watched CSI: NY last night"
"CSI shows are awesome!"

by ShaeElise February 27, 2009