1 definition by TheBetterMyLittlePony

Brainchild

A disorder that makes a persons brain create another brain. It’s a brain child because it’s another brain made by a brain therefore making it it’s child. People who have this disorder tend to have larger heads

“Why does that person have a huge head??”
“Oh they have a brainchild”

by TheBetterMyLittlePony December 15, 2022