A typically Northern Irish expression also spoken as "face as long as a Lurgan spade" meaning to look miserable or long faced.
One theory about the origin of this expression is that a “Lurgan spade” was an under-paid workman digging what is now the Lurgan Park lake. Another theory is that it is a translation from the Irish language lorga spád meaning the shaft/shin of a spade.
Upon observation you would say...
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
