Top definition
When you are doing something that is not the socially accepted norm and it often makes no reasonable sense to other people why you are behaving in such a manner.
Don is bolding whenever he smokes a cigarette because he unconsciously (or consciously) smokes it as fast as possible and ends up with a cherry the size of your thumb.

When Don arrives at a bring and braai with no food or drink, and proceeds to eat a second helping before people that brought food have even had one helping, we say to ourselves "Oh yes. Don is bolding again"
by D_TT June 22, 2010
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