brain poisoned

The condition of having spent a long time in spaces (especially online spaces) that tend to radicalize people and put them further down spirals of weird, isolating thinking. Whether it's a leftist starting out with ironic commie memes and then suddenly arguing the DPRK did nothing wrong, or an elderly Facebook user slowly posting more MAGA content until their entire feed is one step removed from quoting the 14 words, a person becoming brain poisoned is never fun to watch for their soon to be former friends and loved ones.