Mano Silla (=Hand Chair) by Pedro Reyes.
Mexican artist Pedro Reyes designed the Mano Silla and exhibits it at Labor.
He must have been inspired by the other hand chairs designed by the other Pedro, Pedro Friedeberg.
As the fingers are movable you can give your visitors the finger with this chair;-)
Via (+Photo): Designboom
I wish I saw what it looks like while giving a finger, hehe What a fun work is this!
@ Julia:
If you follow the labor link you can see a small one;-)