The final stage of brainrot. At this stage the victim's brain is so rotted that any post or comment made by them could easily be passed off as satire or a bot comment. But nope, that is their actual thought process. They are genuinely that far gone. It is too late for these people.
What's up with Tom? He's been rambling on about human heads in toilets all day.
He's reached end rot. It's best we cut our ties with him.
They are derived from staying in self-isolation in your room for too long. Common among gamers, who remain in their rooms for long periods of time without leaving to experience human contact. Therefore, they suffer from brain rot by being with themselves for so long.
"Have you seen Bill today?"
"Of course, not he's got room rot, haven't seen him for weeks."
When someone has delved into the recesses of twitter and start becoming infected with the obligatory "Twitter brain" where they make hypocritical or geopolitical statements with little to no grounding.
Woman: You can't say retard or the F slur! That's only for austists and/or gay men and the like to use because its been used against them!
Man: But I am autistic and gay, I just don't care to show it.
Woman: YOU SHOULD OWN BEING GAY AND HAVING AUTISM HOW ELSE WILL PEOPLE KNOW YOU CAN USE WORDS???
Man: I should want people to know what I have so they can know whether or not to police me? Twitter rot moment.