Used to describe a person that is very polite or Charming for their own gain
Example Business people can be charming or "Sweet" to customers.If customers see them as igornant or "Sour" they will not shop there Hence the phrase Ya wont catch Flies with Vinegar
I will gladly pay you Tuesday if you would kindly provide me with a cash advancement today [was usually said with an undertone of malice, it`s probably 10 Euros now, lol]
