The noise you make from your nose when you dont agree with what is done or said.A quick expulsion of air commonly used in conjunction with a menacing frown, crinkled eye brows and sarcastic retort. >=/ A sort of combination of snort and sniff.
"that is the goofiest hat you've ever worn". (person wearing the hat makes this face >=/ with a "snaff" from the nose
by Torry Chapman- Flippin AR August 31, 2002