A shit that is accompanied by a large amount of gas under pressure.
John 'I had a massive blaster shit this morning'.

Bob 'What's the hell is that ?'

John 'A massive combination of gas and shit, came out like a shotgun going off'. 'The toilet bowl and my arse was covered in shit'.

Bob 'Lots of toilet paper then ?'

John 'Oh yes, at least one roll !'.
by Crazy49 February 28, 2019
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Wow! That chick has the nicest shit blaster I've seen in a while.
by weave March 28, 2003
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