What did she mean by this?
Did she sell it off to a Chinese resto that serves cat brains?
Did she whore herself and got her brains fucked out of her?
Owarimonogatari S2
Jason Parker
Isaiah Stewart
She couldn't handle being inferior to Gaen so she had part of brain removed so she'd have an excuse to be dumber than her.
Hunter Roberts
It's a metaphor, you fucking idiot.
Mason Ramirez
What could a high schooler possibly know that's valuable enough to exchange for a flight to Antarctica?
Asher Moore
IIRC later in the novels she's revealed to be part of a spy organization.
Thomas King
...
Gavin Allen
That cat is overly fucking long.
Adam Richardson
She sold a piece of her brain to be part of on-board computer.
Dylan Johnson
She became a communist so it makes sense regardless the reason
Joshua Moore
Fuck you Araragi. You could have sex with Cat, Bat and Crab at the same time if you wanted to but you REFUSE TO. Fucking pussy.