This Pump Up Finger is perfect for when you are driving your car to work and suddenly a maniac driver gets in your way, to show your anger towards him all you need to do is “pump it up” and the inflatable hand will make the middle finger pop up.

The inflatable hand comes with two window suckers so it’s easy to stick it on the window you prefer, it costs $18 at BoysStuff.

PS - In case you didn’t know, flicking the bird is the offensive gesture you make when giving the finger to someone, more info about the middle finger gesture at wikipedia.