CTD 

Chuckle to death. It's the new alternative to LOL or laughing out loud. ROF may be added on to form ROFCTD.

*finishing a joke*
Jonny: ..then you're a gay fish.
Carl: CTD!!!
Sepo: CTD!!

CTD by Merlingoth September 22, 2009

CTD 

Computer Transmitted Disease

My computer is full of trojans, it must have a CTD!

CTD by ohtaymeanssuckit September 19, 2009

CTD 

Acronym for Cummins Turbo Diesel

I got smoked out by a CTD last night, I couldn't see for a quarter mile!

CTD by ISBoy October 16, 2007

CTD 

Crash Test Dummy
An extremely disgusting person, who looks like Buster from Myth Busters after an unbelievably ugly test

Dude 1: Hey dude, did you see that girl?
Dude 2: Yeah totally, a genuine CTD
Dude 1: Spot on dude

CTD by BØDEN January 25, 2010

CTD 

Camera Transmitted Disease. Caused by web-cam whore's that have web cam sex a lot.

OMG. I don't want to cyber with you, I might catch a CTD.

CTD by Will Wonder May 11, 2009

CTD 

Cellularly Transmitted Disease, like an STD but for cellphones. CTD's can only be obtained by receiving a dirty pic.

Man that dude totally gave me a CTD last night after the party.

CTD by CrAzYdInGo November 15, 2009

CTD 

Crash Test Dummy: A friend who'll do just about anything to see how it will turn out.

That guy's hot, ask him to dance CTD, DO IT! or Hells yeah you can make it into the pool from the roof, jump CTD!

CTD by I am the CTD April 8, 2010