the act of intentionally having an off-topic conversation in a thread in order to prevent the thread's original topic from being discussed
When xbabycakesx made a thread in which she posted pictures of her new tattoos, some righteous guardian angel of messageboard crusader hijacked it by posting animated .gifs of nefarious cartoon tubers engaged in devious sex acts, thus preventing her from losing face by shifting attention away from the embarrassing photos she had posted.
by Elliott November 14, 2005
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One who gets high -- usually with marijuana -- and proceeds to jack off.
by Rick February 7, 2005
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When you are feeling horny on a plane and want to jackoff, so you go to the airplane toilets and let it flow.
"I might need to do a HiJacking mid flight"
by HeyGuys101 November 6, 2014
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Replying to a forum thread with a post that has at best a loose connection to the thread's topic, with the result that the thread starter's question gets side-tracked.

Often, the tread gets completely derailed as more forum members respond to the hijacker's post or add their own problems to the thread, which are not related to the either the original topic, nor the hijacker's topic.
A vague thread title is an open invitation to hijacking a forum thread with all kinds of unrelated reports.
by Opera Fan December 18, 2011
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n. A term to describe male masturbation on an airplane or any other mode of transportation, at a significant height.
Willie got tired of reading all of the boring magazines on his flight, so he decided to head to the bathroom for a hijack.
by Snocap September 19, 2006
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the term used when an arab person steals something
by the December 12, 2004
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To use someone else's account, usually with permissions.
Derpina: "Hey, is it okay if I hijack your Netflix account?"
Friend: "Of course! It's lusciouslumpyspaceprincesslovesfinn@ymail.com"
by RudeAndNotGinger March 9, 2015
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