On Sunday night, ISIS leader Abu Bakr al-Baghdadi sent out an audio message. Arab Spring activist Iyad El-Baghdadi translated the message and posted its contents to his Twitter.
The message encouraged all Muslims to back ISIS, as well as threatening Western countries.
Muslim Twitter users had a less than sincere response to ISIS's call to arms.
The trolling quickly expanded, and soon everyone was giving ISIS their reasons for being unable to join the fight.
It doesn't seem ISIS's message had the desired effect.
Rachael Krishna is a reporter for BuzzFeed News and is based in London.
Contact Rachael Krishna at email@example.com.
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