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
Whooping cough..Violent cough causing the victim to move and heave to clear the chest.....not so much the term but the way it was used by a certain fellow in his description of how it might effect or in his case enhance love making......
Tha' wan is the town bike.
That woman over there that we know has such a filthy mouth for suckin on her that she could very possible such a lemon through a narrow pipe.