What are "dubs"?

Sorry, guys. I know /prog/ is already filled with more cancer threads than it needs, and, as much as I don't like to make it worse, I have to ask this stupid question.

Some dope keeps posting "check them dubs". Are you talking about anime dubs? Or are you talking about that retarded 4channish habit of the image board ``fags'' to seek "doubles", "triples" or whatever?

Fuck this. It's just wrong.

Turns out, you have to do this (with a space):

>shit[br]ass[br]jizz

Results in

shit
ass
jizz


Fuck. Isn't there a way to type them on separate lines?