The spelling of the word "sour bag" is fairly straightforward. "Sour" is spelled phonetically as /saʊər/ (sow-er) and "bag" is spelled as /bæɡ/ (bag). When pronounced together as one word, "sour bag" sounds like /saʊərˈbæɡ/ (sow-er-bag). This term most likely refers to a bag of sour candy or a bag used for storing sour foods. While the spelling may seem simple, proper pronunciation is important for clear communication in both casual and professional settings.