....makes you scream with frustration?
Computer is the obvious answer but for me it's the MOTHERFUCKUNG HOOVER.
It seems to deliberately get stuck on corners, fall over it's own wire and then smirk at me with its STUPID FACE (guess you can tell the make!).
I know it's irrational but maybe it's a cathartic outlet??
So tell me - what inanimate object would you like to punch, metaphorically?