Adding Insult to Injury

If you add insult to injury,

you can factor out an (in) first.

That gives in(sult+jury)

Where "Sult" is defined as 

'a village in the Gramsh municipality of Albania'

and "jury" is defined as

'a body of people who swear to give a verdict in court based on presented evidence.'

Substituting, we get:

In(a body of people who swear to give a verdict in court based on evidence + a village in the Gramsh municipality of Albania)

(remember, order of addition doesn't matter)

Expanding, we get our final answer:

In a body of people who swear to give a verdict in court based on evidence in a village in the Gramsh municipality of Albania

This is how you add insult to injury.