DREAM DICTIONARY - Snigger :Here is how dream analysis works. A dream about someone sniggering may have been triggered by a thought like "he was so smug, just sitting there saying nothing." The sniggering was a symbol of that smugness, because when someone does "snigger" then this can be sign of smugness.
Look through the list of associated words, which all link by association with "sniggering" in English literature. Such associations work in similar ways to dream associations. This list may give you a hint at what caused your dream.
SYMBOLIC WORD ASSOCIATIONS : wounded, forced into, smug, silent , aloof, sauntered, remark, comment, disgust, enjoying his discomfort, amateur
OTHER LINKS wound dreams hurt dreams laugh dreams smug dreams disgusting dreams offend dreams force dreams
This website has a huge collection of dreams. The accuracy of the dream symbolism depends on a huge huge number of practical examples. If you have a dream which you feel you understand then please send it to me at firstname.lastname@example.org and I would be delighted to add it to the collection.