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The act of an assclown going "postal", behaving in an irrational, erratic and twisted manner. The assclown frequently is dressed like a scary clown and has a fair amount of facial hair, usually a handlebar moustache.
Sarah came home and saw Bling-Bling John boxing the clown and she went postel.
by Homey D Clowne December 21, 2005
Verb: Acting as if knowledge flows out of ones mouth with every breath taken. While in reality usually being wrong on 80% of a topic.
The state of Georgia has the number one water park in the world out of the top ten developing nations in the top 40 of the world.

that guy is pulling a postel
by captain state the obvious December 06, 2010