Someone that spams the shit out of forum threads with posts
Timid: This guy Kelly is continuously posting on my thread!!

Artzy: I'm telling you he's a fucking thread bomber.
by Professor Artzy January 11, 2017
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An obscure sexual position usually performed on a co-workers mom spouse or girlfriend.
by Willis motha f-in T February 11, 2022
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A thread on a message board that is not very good. In fact it is quite attrocious
Hey, that thread "I'm not a nerd by definition?" by imzjustplayin was really atrocious.

Yeah, it was a shit thread.


by brass_monkey1231231 March 25, 2008
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Anonymous messageboard at the yellow5.com website. Common hangout for trolls, hackers and penguins.

Also see, Pokey the penguin, meme, eigenvector girl.
100 SERIES

Don't lie to me Gustav, you're a stinking mac user!
by No_Phreaking_Way February 26, 2004
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When someone takes your email thread from one topic completely off topic to some other subject.
Tim:
Email Subject: Snowboarding this weekend
Hey, anyone want to ride Hunter this weekend?

reply:
Will:
Email Subject: Snowboarding this weekend
Hey, I got a really cool macbook air, this thing rocks and kicks the ass of any Microsoft junk you tools use

Tim:
Email Subject: thread jacked MS vs Apple (was Snowboarding)
Damn I hate it when I get thread jacked.

by SoCal or bust March 19, 2008
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Posting off topic messages to a discussion forum. Usually, but not always, with purposeful intent to derail the discussion.
Example post for thread-shitting:

"I just ate a huge bean burrito for lunch! There really wasn't enough cheese in it, but the extra Pico made up for it. It was quite satisfying."
by uiwrfhuiwerhf May 18, 2008
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Taking over a thread on a message board by taking a part of the original posted topic, twisting it around and "hijacking" the thread itself. What happens is that the original content contained in the post becomes moot and whatever the "Thread Jacker" has manipulated the content to be becomes the new content thereby "hijacking" the original intent of post. People now respond to the "thread jacker's" input and the that becomes the focus of the tread.
LK25 did an excellent job of thread jacking Koko's post on Dennis Landolt.

Koko's posted topic on Dennis Landolt (PSU Football player) and comments regarding his development on Penn States FOS site becomes indictment of whole offensive line:

KokobewareHI: "Why do I feel like this thread is about to get hijacked? What happened to my original question?"

PSUnittany: "LK25, the thread was about Landolt & his progress...and (of course) you spin it into another "the staff is lazy at recruiting - we are doomed!" threads...It's so tiresome. Please link me to any threads that you don't hijack & ruin. Thank you."

OCCalif: "Although LK25 has jacked this thread to a degree, I feel his concerns are somewhat valid- we should be concerned about our offensive line."
by s6 October 3, 2006
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