A person with kids who is oblivious to everything besides the fact that they've procreated.
Mom: Oh I know I'm living in squalor but I just love kids! And I'm going to get pregnant for the 5th time regardless of my situation! It's a miracle!

Normal person: Wow that bitch is a real breeder brain.
by Lacey13 January 14, 2012
Get the Breeder brain mug.