R-Tard 

simple explication: worse than a retard, not as bad as a fucktard.
mumbo jumbo explanation: a term used to direct a person as a mentally slow (or retarded) person used when a normal person makes a mistake.

Scene from South Park: Make Love Not Warcraft:

gerald broulflouski:y r u on the internet?? you should be outside socializing with youre friends.

kyle broulflouski: i am socializing with my friends R-Tard.

gerald: .......i am not an R-Tard......

R-Tard by InuYashaFreak64 from youtube October 13, 2007

blow tard 

A blow tard is a partially retarded person who is such a dumbass, they can be persuaded to blow anyone and anything. A perfect example is that twinky bitch Jarred.

Jarred are you sucking that pig off.....fuckin' blow tard.

or

Oh my god is that Jarred? What a blow tard. He once raped a pidgeon.

blow tard by Cambo against Jarred February 8, 2005

K-tard 

Anyone whose name begins with a 'K' and acts like a mental midget.

Kalvin sure is a K-tard today.

K-tard by Karma Chamelion69 February 1, 2010

Ultra tard 

Ultra Tard: 1. A person who messes with stuff until they get hurt. 2. A player for the New York Jets

e.g. Michael you ok? yeah oh no it's gone through my foot... narration in the background... thats cos your an ultra tard

Ultra tard by Dykesie9491 December 9, 2008

h-tard 

Any country folk that come to college bars/parties and plays a bunch of country music on the juke box/stereo. H-tards are also ignorant, loud, and culturally close minded.

"Someone turn this country music crap off and get these h-tards out of here."

h-tard by donnylightning June 8, 2009

Holi-Tard 

someone who cannot comprehend the meaning or feeling of the Christmas Season good cheer sprit like scrooge

"hey bro, your cuz just dissed Santas' sleigh team- what a Holi-Tard

Holi-Tard by grzly December 23, 2009

fag-tard 

a gay retard

dezmond is being such a fag-tard!!! i hate that fag-tard!!

fag-tard by livelifeunknown June 8, 2010