Originated in Middlesbrough, North East England. People began to say "Nah" instead of "No" but in a faster, more aggressive tone than the other definitions on here. "Schnah" is just an extension of "Nah". Usually used to make the person asking the question look stupid. Used a lot by Chavs
When something, anything, suffers from a lack of quality in the way that schwag weed sucks. A chronically bitchin person, place, item, music or event can never be schwagtrulescent. Having the essence of schwagg is never a good thing, unless it is actually schwagg weed and that's all you can afford.