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In an internet forum, this is when somebody posts something either highly controversial or just plain ignorant or stupid in a forum thread, or willfully derails a thread, thus inviting other forum posters to make all the return cheap shots and scornful insults they at the poster making the remark or post for being ridiculous, asinine, or beyond the pale.
"After he posted that crazy remark about race, he just turned this into a popcorn thread
by MTJ78257 August 11, 2014
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