This meaning of the word is used exclusively in the AFOL, or Adult Fans Of Lego community. It's a combination of the words clone (as in Star Wars Clone Troopers) and (re)tard.
The term refers to someone who buys a lot of the standard clone trooper figures, and then uses (or rather: abuses) his sharpies while trying (and most of the time failing) to draw cool legion colors on them. They most often adopt online names like "Commander Marks of the ### (fill in any 3 numbers) Legion" and build very shoddy and ugly builds. They react very defensively when somebody calls them a clonetard.
someone who gets really pissed about a lil name calling and is secretly gay (not that there is anything wrong with that) so tries to hide inside someone elses personality, and plus he is retarded
A clontarf is a feminized liberal male douchebag; a know-it-all phloom who has to have the last word in every conversation; a guy who uses puns, big words, and trivia questions to show everyone how smart he is; a dick weed who always corrects your spelling. Like a black hole, he sucks all other conversation out of the room so that he can only hear himself talk.
An absolutely foolproof way to keep minors from viewing content deemed "too mature" for them to watch.
Billy: "So I was trying to watch some videos for an M rated game, and I ran into an age gate, so I put in my real birthday. SOMEHOW it managed to figure out that I am 12. CURSE YOU AGE GATE!!!"
Bill: "Fucking age gate! *quick scroll* THERE! I was born on January 1, 1904. Fuck you age gate."
A)
The Crud that collects under the keys in a keyboard. Usually more severe in the keyboards of programmers and webmasters as they tend to spend a lot of time at the the computer and thus eat at their desk. Mainly affecting IBM Model M (clicly) style boards.
B)
Can also be used to gross out Non-Techie people
A)
Bill: want to go to the club?
Bob: No, I've got to clean out my board chow, keys are starting to stick.
B)
Bill: Want to go out to get a bite?
Bob: No, i am just going to have some of my board chow/
Bill: Whats' that?
Bob: The food scraps that collect in my keyboard; Want some?
Bill: *GAG* *HURL* *GAG*