when you have gas built up behind your crap and suddenly need to go to the bathroom, and once you sit down u shoot the crap so hard it makes the water splash your ass. anlso known as projectile shitting.
by Wolfman (not boy you mofo) January 24, 2009
Get the Blowing Chunks Backwards mug.a slightly crude code word meaning " i have something private to tell you at a later moment", often used when an undesireable person breaks into your conversation
Alice: so you'll never guess what Jack did yesterday at the park.
Matt: spill.
* Jack enters the room *
Alice: Blowing Chunks
Matt: spill.
* Jack enters the room *
Alice: Blowing Chunks
by Alice Malice Murder October 11, 2008
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