The Self-Sustainable Chair is actually an unflattering dress made of the finest polyethylene. Two pumps extend from the bodice and attach to foot weights that force air into a bubble of fabric positioned over the booty (heyyy!) while walking. The result is a ready-to-sit-on chair you can use anywhere-- for five seconds. That is, until the weight of all the junk in your real trunk deflates the cushion and leaves you looking plain dumbass. For more awkward demos, click here.