You area a four wheeler if:

-you have ever had 2 wheels off the ground and said "We're in good shape."
-you like mud cause "its high in minerals."
-every dent you put in your vehicle pops 2 dents out.
-you have to get the wheel barrow to clean your drive way off after you wash your vehicle.
-you have driven a vehicle for 10 hours straight ...and never exceeded 6 kph.
-your email address refers to your truck rather than to you.
-you buy new parts because you don't know where you put the spares.
-you are looking for a tow vehicle and still haven't bought furniture for your house!
-you measure all family acquisitions in terms of the number of parts that could have been purchased.
-you look at the purchase of tools as a long term investment.
-your garage holds more vehicles than your house has bedrooms.
-you have enough spare parts to build another truck.
-you have truck parts in your cubicle at work.
-your Christmas list begins with another set of BFG MTs and E-Z Locker.
-after your answer to "What did you do this weekend?" the next question is always: "And you do this for fun? Right?"
-you talk to other cars on the road, calling them by the manufacturer's name.
-your criteria for selecting a significant other include auto repair skills. Air tools optional.
-you give out 4 wheel Parts Wholesalers number when a friend asks for the best hardware store.
-you hate long distance driving, but you will gladly drive 400 kms. to the trail.
-you save broken car parts as souvenirs.
-you know the exact story behind every "souvenir".
-you would choose a roll bar over air conditioning if it were an option.
-your idea of a good time is sitting around figuring out gear ratios and the ideal crawl ratio.
-you refer to "Friends" by the type of truck they drive rather than names.
-90% of you work e-mail is wheeling related
-you keep trying to coerce your spouse to allow you to remove the doors of the mini van.
-you refer to the local construction site as "The testing ground".
-when someone says someone is Biased you immediately think of tires.
-your daily driven car is considered a mild trail rig.
-drivers behind you can see the car in front of you, under your truck.
-you base your next vehicle purchase on its crawl ratio and what's available for it in the after market.
-you stopped washing your truck because it shows off the scratches.
-you'll drop hefty sum on new axles but the kitchen sink still leaks.
-your vacation pictures are all off road.
-you always have your drinks on the rocks!
-you look at an open area in the woods and can determine the best line.
-working on your truck is considered relaxation.
-every time you see a lowered truck you want to get out and slap the driver silly.
-you look at other cars and think to yourself "I can crawl over that".
-you carry more parts to the trail than home.
-you have installed or though about installing a lift on the lawn mower.
-you consider anything without 4wd - useless.
-your ideal vehicle is a Unimog.
-your truck cost as much as an italian sports car.
-when someone mentions "Xtreme" your eyes light up!
-motivation involves someone saying "you can't make it".

And last but not the least:
-it is not considered a good trail ride if nothing breaks! :D