1 definition by Grumpyfatninja7

Kbm is a term given to someone who lacks even relatively basic driving skills, yet is in denial.
Person 1: Hey man can you pick me up I don't have my car.
Person 2: Sorry, I don't have a drivers license, but i'm going in to take my test this week.
Person 1: Thats like your 10th time taking it! I don't even want a ride anymore you are going to crash!
Person 2: No i'm actually great driver I just keep failing for the dumbest things like not yielding.
Person 1: Ya keep thinking that...(under his breath) "what a Kbm"
by Grumpyfatninja7 September 16, 2011
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