Shneeze Shhhh - Knees
A combination of two bodily functions;
1. Shit, the human excretion function
2. A Sneeze
Generally, the two are combined while one is sitting in a bathroom stall; one inhales strong defecation odors seconds before sneezing, then, while sneezing their bowels continue to defecate, sometimes in spraying like a sneeze from the anus.