Hacker collective Anonymous has declared December 11 an ISIS trolling day, saying it'll be "a day they will never forget," and it wants you to join in. The announcement was made via a Ghostbin posting, and is a continuation of the ongoing Anonymous operation against ISIS, which was heightened earlier this month following the terror attacks in Paris.

Here, Anonymous is asking for everyone's help, but not for anything technical. Instead, it wants to troll ISIS. Hard. The trolling will take place in five different places, according to the post. Social media is the primary battleground, with Twitter, Facebook, Instagram, and YouTube specifically mentioned. Additionally, Anonymous is organising demonstrations in real life all over the world.

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What's the plan? Don't expect anything too sophisticated. This is a trolling exercise, after all; however the intention is clear: Anonymous says this "mass uprising" will show there are more people against ISIS than for them, and the world isn't cowering in fear.

On Twitter, Anonymous says supporters should post photos mocking ISIS and mention known ISIS member's account names. Helpfully, Anonymous says these could include images of goats with captions referencing ISIS member's wives. The intention is also to get the hashtags #Daesh and #Daeshbags trending. It's a similar story for the Facebook attack, and on Instagram. On YouTube, Anonymous suggests people produce videos mocking ISIS, and draw attention to videos showing captured ISIS members.

Behind the schoolyard pranks is a more serious activity. Anonymous says it wants people to seek out ISIS social media accounts, and report them. Removing ISIS accounts is a key tactic for Anonymous in its online efforts against ISIS. For its real world demonstrations, Anonymous has protest gatherings planned at different locations around the world. It also says people should print fliers that show ISIS does not represent the Islamic faith.

"On December 11 we will show them that we are not afraid," Anonymous writes when clarifying the reasons behind the December 11 plan, adding, "We will mock them for the idiots they are."