These are all terms that those new to the OBD, or more specifically, character debate forums in general, might be confused about when they see these thrown around in pretty much every thread.
Fear not! You don't have to look newbish(read: like fresh meat) by asking the sometimes embarrassing "What does CIS/DEM/____ mean?"
Common terms:
character induced stupidity (CIS): Basically, it's when even though a character can use the full extent of their power, or take advantages of an opponents mistakes, they instead either consciously choose to squander the opportunity, or for reasons unknown to readers, just don't go all out.
For OBD purposes, threads where "CIS = on" indicate that even though the characters involved might be able to use their full abilities, they're still bound by what their tendencies are in battle.
(ex. Ikkaku foregoing the use of his own defense or working around another's.)
plot induced stupidity (PIS): This is also known as plot no jutsu(PNJ).
This is when a character loses a fight against another for reasons that can only be described as "for plot." Case in point: an antagonist is bigger, stronger, faster, more skilled, and has better and more useful techniques than a protagonist opponent, but for reasons that oftentimes almost defy logic... somehow lose anyway.
For OBD purposes, PIS is pretty much always off, or else main protagonists would always have the edge over antagonists in battles.
(ex. almost every series)
jobbing: This is basically the Western comic fan term for a type of PIS.
Jobbing is losing to someone to make them look powerful -- to hype them. (info provided by Spy_Smasher)
Jobbing is when a character/entity loses a battle/confrontation against a much weaker character/entity, due to reasons ranging from the unlikely to the sheer ridiculous. Characters/entities who frequently job are known as 'jobbers'. A character/entity who wins numerous battles/confrontations against characters/entities that he/she/it should not really win possesses what fans label as 'jobber aura'. (info provided by Comic Book Guy)
The term "jobbing" comes from Professional Wrestling, where it came a person who was supposed to lose said to "do their job", since all the results are scripted. Eventually, they'd just say that they were supposed to "job" tonight, and now we apply it to things like Comics and Manga, where people lose due to 'plot restrictions'. (info provided by Guy Gardener)
(ex. Silver Surfer jobbed against Black Panther)
jobber aura: A character who wins numerous battles or confrontations against other characters that they should not really win possesses what fans label as 'jobber aura'. (info provided by Comic Book Guy)
(ex. Wolverine, Black Panther, Batman, Captain America)
deus ex machina (DEM): This isn't as common as most of the others, but it pops up from time to time.
This is when an unexpected character, device, or event gets brought into a work of fiction to resolve a situation.
(ex. most powerups, like Ishida's against Mayuri)
canon: These are bodies of works that are considered to be "genuine" or "official" within a certain fictional universe.
For OBD purposes, this would mean any form(s) of a series that the original author or creator had the largest part, and near full autonomy, in creating.
(ex. most manga came before their anime counterparts, and are considered canon by most)
retroactive continuity (retcon): This is purposefully changing previously established facts and truths about a work of fiction. It mostly applies to Western comics, but there are exceptions(read: post-skip Sharingan).
For OBD purposes, retcons affect which versions of characters might be used, since certain versions of characters may have vastly different abilities than the others.
(ex. pre- and post-Crisis Superman, although arguable)
curbstomp: Also known as rape, and rapestomp.
To my knowledge, these are OBD specific terms.
It's an adjective to describe battles created by members where one character's abilities and strengths far exceed another's to the point where the other character simply has no chance to win.
(ex. SSJ3 Goku vs. pre-skip Naruto)
babyshake: Used before even my time here. It was described as being the highest level of pwned one can attain in the OBD.
(possible ex. Dr. Strange vs. Claymoreverse)
pwn: Term originally came into use because of the Half Life: Counterstrike games.
When one person managed to perform a clean kill, it was said that the other player was "owned," but in the heat of a game, and with the close placement of the "p" button to the "o," many ended up saying "pwned" in the game's chat function by accident.
It is mistakenly misspelled on purpose all across the internet now.
The term "pwn" is under contention. The original iteration is either in counterstrike, or more likely a Warcraft 2 map that was added in. Losing said map produced the maxim, "you got pwned". (info provided by Pipboy)
For OBD purposes, this is when a character... basically gets cleanly hit in almost any fashion. It can also apply to one OBD member making another look stupid using logical reasoning or from posting scans that undoubtedly disprove their words.
(ex. pick a series, and you will find someone getting pwned)
OP: This can be used interchangeably with either "One Piece" manga or the "opening/original poster" of a thread, depending on the context.
fallacy: This is a component of an argument that is demonstrably flawed in it's logic, thus rendering an entire argument invalid.
See Endless Mike's thread for a more in-depth analysis with examples.
hyperbole: Fancy word for "exaggeration," used by OBDers to make themselves sound more intelligent.
(ex. "Tsunade is like a 'god of war'")
GAR: A term used towards male characters and individuals who are so overwhelmingly manly that your own masculinity is absolutely buried, leaving you naught but a whimpering, swooning girl-child before them.
The best possible definition of this term can be found here.
(ex. Gutts, Gara, Kenshirou)
faster than light (FTL): This is pretty much self explanatory.
The acronym form of this term is very often used throughout the OBD to describe characters who's speed can exceed 299,792,458 meters per second, or 186,282.392 miles per second.
(ex. Dark Schneider and The Shrike, among others)
speedblitz: This is the word used to describe an action that is likely to occur when one character is significantly faster than the other.
For OBD purposes, this is likely the end of a battle thread almost before it even starts, since if the combatants involved are comparable in strength and durability, yet their potential speeds are vastly different, it ends up leading to a one-sided battle.
(ex. The Flash vs. nearly anyone)
"gg _____": The "gg" stands for "good game" and the "_____" is a blank for any character mentioned after the gg.
This is actually misleading, since it's use is actually to indicate who an OBD member believes would lose a fight.
(ex. gg Itachi = "I believe Itachi will lose")
battle field removal (BFR): Also known as "by fucking ringout".
It's when a character is able to win a match or a fight by removing their opponent from the battlefield. This could be anything that constitutes as the ring, and being unable to return. (info provided by Id)
(ex. causing a character to be shot into space, taken to another dimension, etc...)
continuity: Continuity refers to diegetic world of fiction.
Continuity is essentially cause and effect. Comic books are like a soap opera most of the time. Each issue will follow roughly from the last one. Over time a person can make enemies, fall in love, etc. If someone is married and in love one issue then the next issue they should still be married and in love. Over time and the course of many issues their love might start to fade and they could get a divorce. However you wouldn?t expect that in one issue a character is happily married and the next he?s divorced for no reason. Comic Books are continuous and so follow what?s happened before, also known as their continuity.
Some comic books and issues are out of continuity. An example of this is the graphic novel Superman: Red Son I mentioned earlier. It shows what would have happened if Superman landed in Russia. However Superman actually landed in Kansas, and the whole Red Son story has no effect on the main Superman story that is ongoing in the comics. Television series, movies and videogames are almost without exception out of continuity.