When you are "doing", "bumming", "ploughing", "banging", etc. someone up the arse, she/he (if your a poofter) farts and blows your dick off.
John: "Tom, why are you clutching your crotch?"

Tom: "Arse Blast I'm afraid" Clutching the hole in his groin

John: Ouch!

by Mr Coolio October 24, 2007
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Similar to an Arse Blast, but this time they follow through.
John: "Say whats that smell Tom?"

Tom: "You don't want to know mate", Taking in the fumes from the crevice where his penis once stood.

John: "Let me guess, Sloppy Arse Blast?"

Tom: "You got it!"
by Mr Coolio October 24, 2007
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A fragment of human shit that is fired out of the anus after a large, explosive fart.
Mark's anus roared! Dave quickly ducked as a blasted arse shard flew over his head.
by Zonal K September 19, 2019
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