Yep, it is a brain. A brain of human.
I hate to get up early to work in the cold winter. Every time I leave my home, I forget my brain and leave it in my bed. So I always make mistakes in my work.
What's even more rediculous is my collgues give this brain to me, making fun of me.
But actually this silicone brain is stretchy and 5*4cm size is small enough to hold in the hand. So now it is my favourate toy though the appearance of it is so weird.