House-brain
One's restricted cognitive ability that results from spending too much time indoors.
After several attempts at completing his assignment, Tadgh realised his failed efforts could be attributed to his house-brain.
brain housing group
What a U.S. Marine calls his head, also known as a grape or a jar head
Now, I want you to store this in your little brain housing group...This is my rifle, this is my gun...This is for fighting and this is for fun.