Top Definition
Haphazard intentional ignorance or disregard, which will, INNEVITABLY, lead to regret.
Robbie: Aaaargh!! Why d'you leave that tin of paint there?

Euan: Sorry man, I couldn't be arsed moving it.

Robbie: That just stained my brand new dungarees you Bostulant Fuck! I can't believe your bostulance! No more Alaskan Pipelines for you you cunt
by Artimus Ward September 11, 2006
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