What Thom said, I f**king dispise ignorant pricks who don't acknowledge the gesture when you let them pass on a narrow road. I make a point of screaming "your f**king welcome" out of the window if its open!
Also Women drivers in General. Majority of the time, its women who do the above, but the fact that they sit in the outside lane on the Motorway really gets my goat! I think its very dangerous undertaking, so I flash my lights like f**k, beep my horn like crazy, and occasionally they may even check their mirrors when they spot something out of the corner of they're eye, and move over!

The mother in law! Constantly feeding my four year old biscuits and cakes! Even just before Lunch/Dinner. I get her home when she's been at the in laws, make Lunch/Dinner, and the little un' doesn't want it, and kicks off cos she's been scoffing crap all bloody day! Even though we've asked the in laws not to give her them, they tells my daughter not to tell us! But my little un' grasses her up anyway! You think she'd learn!!

I'm such a miserable bastard! Honestly, I could go on forever now.....................................