A snide look is a "nasty" kind of sideways glance at someone. Snide has many different meanings in English and it has a use in slang where a product may be described as snide....in other words....it is a fake, copy or counterfeit item, for example: "I bought a snide Rolex watch when I was in Asia on holiday!". If someone gives you a snide look then it is a negative look and could be described as a "sneer". Snide can also mean sly or cheeky. A "snide comment" is usually a malicious comment made towards someone whom the commentator dislikes. I hope this helps!?

A snide look is one of contempt and ridicule. Imagine if somebody wanted to make you feel small and insignificant. One thing - 'snide', as a slang term for counterfeit, is a British slang term. It is not used that way in American English. Here is a picture of a snide look: http://2.bp.blogspot.com/-0zUGhCWm5Io/TtWBD_HlmUI/AAAAAAAAAGQ/f9U1RPxsdng/s1600/snide+face.jpg