Top Definition
a person just damn lacking in one way or another.
The clemster on the roof hurts him, himself and others daily. Insurance premiums on the clem are often made in installments, it's the only option for such a high risk clem.

Mike is such a clemster he pulled out a piece a metal cut himself and his co-worker. The clemster just lacks damn focus.
by metalmary September 04, 2010

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