A really loud flatus (fart). Theoretically caused by turds being ripped in two inside one's colon (crap factory).
When someone blows off a dump and the expulsive force creates a foul shock wave that first travels outward and then bounces off the walls and travels back inward towards the source of the original buttblast. Those who aren’t steady on their feet can be swept up in the ripturd and carried either into the toilet or right up the brownfactory of said ripper.
Jo: I Nearly got caught up in the ripturd that Niro nastied yesterday.
Pat: fuck I gotta do one