Kool-Aid's association with Jonestown has turned into a common meme and saying: An Internet meme depicts the Kool-Aid man in relation to Jonestown. The surprising thing is that all the sources on the massacre say the powder was the grape variety of another drink brand, Flavor Aid.
Causes of Mouth Sourness. 1  Invariably, anaerobic bacteria produce a sulfur smelling sour taste and bad breath, that you may face in the morning. 2  Posterior nasal drip is another cause for sour taste. 3  Acidity due to a reflux of the stomach contents causes extreme sourness.
Bitter taste in mouth is a common side effect of many medications. It could be due to infection of gums or cavities in teeth. It could also be an abnormal perception of bitter taste called dysgeusia. GERD and heart burn too cause metallic taste in mouth. Post nasal drip as in sinusitis, salivary glands infection, pharyngitis or strep infection too are common causes.