An insult for someone who can't put the pieces together.
Someone who is stupid.
You're such a lego brain.
When you have way too much nicotine in your system.
Person one: Damn man, Andrew hit 8 juuls at once! Now he has Juul Brain.
Person two: holy shit, he's a god.
The part of your brain which produces negative thoughts, almost like the devil in the devil vs angel trope. Often associated with poor mental health the enemy brain makes you see yourself in the worst light it can.
Theme of Fox Stevenson song "Enemy Brain"
I wish my enemy brain would stop making me hate myself.
When you overwork yourself and you can’t focus on anything. Like your head is full of cotton and you’re also tired.
I studied all night and now i’m a bit brain-dead.
Andrew when he plays Overwatch
“Did you see that dood he’s brain dead