Train Wreck (n.) A thread that has gone off its original tracks via a post and responses to the post that have little to do with the Op and are usually an out of place political/religious comment. Quite often involves the use of the word Nazi before it goes too many posts.
Or it could involve references to the comparative vices of the 42nd and 43rd presidents of the United States, e.g., “X got a blowjob” – “Y couldn’t get a blowjob standing with his trousers down and waving a handful of $100 bills in a whorehouse, and besides he invaded Iraq.”
Troll: Internet equivalent of that nasty little kid in that old WB cartoon about dogs who drops a cat into the dog show.
Squee: (n) involuntary squeeling indicative of extreme joy, as when viewing a picture of a kitten or when having tossably soft hair; e.g. “don’t harsh my squee.”
fallacy n. usu. w/ nominative Latin appellation (e.g. ad hominem): 1) Used as a rhetorical device, a long standing, often academic proof that people have known you were full of shit since before the fall of the Roman Empire, fuckwit. 2) Any demonstration that an opposing viewpoint, while tirelessly researched, cogently presented and well substantiated is, in fact, wrong.
equate n, A number on the bathroom scale which causes a cry of alarm.
Mod, *n., * 1. A stern but just guardian of the public good who ensures that your opponents in a Great Debates thread do not churlishly assassinate your character. 2. A power-mad fascist who expects you to abide by utterly nonsensical rules of behavior. Probably sexually repressed. Invariably a member of the wrong political party.
Bigamy: When you have overlooked the foibles of fools who have wronged you by merely breathing your air. Because you’re just that kind of guy. You’ve earned the right to say “That was bigamy.”
Assmunch: Indicative of a quantity you’d rather not give to another. “Assmunch as I’d love to have dinner with you tonight, I have other plans. I’m going to sit around in my torn underwear thinking about what an assmunch you are.”
Collate: Using the telephone subsequent to when you should have.
Yes, I know Ididn’t quite follow the rules of the thread. Assmunch as I’d like to, I thought I’d bring it to the next level. Wasn’t that bigamy?
Only if bigamy is a crime 
Second-place, -in his class, -in a field of thousands : (n.) Loser.
Simulpost (n.): Some jerk having, by sheer coincidence, the same witty, insightful observation as you do, but being damnably faster with a mouseclick than you, curse him/her.
Cite: A manifest instance of the truth of the geek proverb, “There are no answers, only cross-references.”
American Football n. a sport based on Rugby, but played by sissies who require padding and helmets.
Rugby(n.)-The archaic, crass forerunner of American Football, played by an array of cretins who invariably suffered some degree of umbilical cord entanglement at birth.
(Kidding…only kidding.)
Politician(n.)-An extremely charismatic liar.
Wasterel - A very lazy bird of prey.
fuckwit One with whom you strenuously disagree. q.v. posts #13 and 14, above.
Ritual Purification: Memorial rites to commemorate suffering caused by untreated Obsessive-Compulsive Disorder in Early Bronze Age ancestors.