Top Definition
The act of causing one's self or allowing one's self to be caused to spew somewhat slimy liquids from an extruding cavity of the body. This is often caused by an exciting and humorous stimulant, and is often performed amidst much laughter and pleasure. It also often causes a somewhat wet lap. Frequently when people nostrate in public by accident they will run out of the room in an embarrassed frenzy while blushing and holding the extruding body part from whence the slimy liquid came hoping to prevent the reaction from occuring again from the pleasureful spasms curently occuring.
When you laugh and coke comes out your nose, this is Nostration
by National Council For Nostration September 01, 2006

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