Anybody who hangs a toy from the rear bumper of their car. We know, you haven't grown up yet; now get in line with the ladies who have thirty sun-baked stuffed animals on their rear window package/hat-shelf, and the insecure yahoos with trucknuts on their Jeeps and F150s...you're in the same boat, in my opinion. We get it, you like comic books that were inked in Japan, but printed by cheaper Indonesian labor.
Any tacked-on, plasti-kromed vestigal filligree that you bought at the auto parts store for $8.99, and slapped on your fender (or somewhere else that's even more hideous). It's all Buick's fault for reviving its own trend, but worse because BMW took it a step further on their M3 around 2003 or so. And if you call it an E## in all of your conversation without referring it to it's real name and model year in ordinary conversation, than you're just as annoying as the Skyline fanatics that will endlessly blather about how a Vspec-II.V BNR3iV Nerd-spec is much more important that the R33, tuned by some shop that made a one-off example that burned to the ground in a testing accident due to a "turbocharger that was the size of a Saturn V rocket".
Any vehicle with completely worn-out struts or air-ride suspensions. Lincoln Continentals and Ford Tauruses are the worst offenders, due to the formula: (Repair Cost) = 3 x (Value of Car) For that matter, people who've lowered their car to the point that they must travel over a speed bump at 0.5 mph or less. Go get in line with the elderly in their softly-sprung land yachts.
Foreign license plates on cars from people who haven't actually lived (let alone registered) their car in that country. I know exactly one person who can boast it, and he's 75, rocking a whether-beaten Okinawa plate on his old LS 400. The rest of you are posers, put it up in your garage, bedroom wall, or donate it to T.G.I.Friday's for a tax deduction.
Flames...on anything. Only permitted if your car:
A) Can do a 10-second 1/4-mile
B) Is actual ejecta from Mt. Pinatubo
C) Survived a free-fall from re-entering the earth's atmosphere
D) Is driven by a Calgary Flames fan (bonus points if an actual Atlanta Flames fan)
E) Actually on fire (Note: obscure Skyline noted above might count)
Absurdly large stickers denoting the name plate of your car on your back window. The funny thing is they pay for that privilege...
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