Originally Posted by CheapLikeAFox
Probably because the term as you spelled it is usually used online for race baiting. The less offensive spelling is "snickers" and it gets the same point across.
I've always considered snig gers to have a more nasal quality. A bit more air volume from the nostrils, where snickers is mouthier. (I also, for some reason, connote it with the weasels that laugh themselves to death from Roger Rabbit.)
I don't know if most people differentiate between them, however.
Actually, most people don't believe it's a word, from my experience.