Brain farts are a conspiracy. They are the product of the Ministry of Power's experimentations at OUR expense. Foerters (as they are called), are the elite members of the Foerting Heat, which are super soldiers that were created and used by the government to project, then rip and tear away thoughts. Those thoughts are then used at (free) will by the Ministry, to try to help murder the peoples en masse while they sleep. So, hold on to your thoughts (for snatched thoughts are more powerful than idle ones). Because you never know who's going to snatch them.