Lack of lane discipline irks me the most.
Cars with brogold badges.
Trucks raised to rediculous heights (why should your bumper hitch decapitate me just because you think your truck looks cool).
Cars with absurdly oversized wheels (why should your stock brakes fail and your car hit me just so you can roll like dat?) besides, your automatic gearbox is saying WTF??? here’s a tip for you dumbass: http://en.wikipedia.org/wiki/Unsprung_mass
Big brushguards on trucks (that extra weight is confusing your trucks braking, stability and airbag sensors you dipshit.
Idiots that lay on the horn when I slow as a courtesy to another driver.
People that smugly snail up the on ramp because the dont want to upset the fuel economy indicator in their Prius.
Taco rockets.
Riced up imports (sorry dufus, putting a Type R sticker and a huge wing spoiler on your off the rack USDM Accord doesnt make it an Accord SI- R G).
That idiot I saw with Mugen stickers on his fully depreciated BMW 528i.
People that slow down when the road gets interesting.
People that show porn in their headrest monitors… No, actually that’s funny.