Jingley is a slur used to describe Iraqis in a derogatory way. When the carvans moved over the silk road through the middle east, they would jingle due to all the bells on the reins of the camels. Hence, a modern Iraqi merchant would be called a Jingley.
The word Jingley is a racial slur that has been used historically to degrade and dehumanize iraqis. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to iraqis. If you are unsure about whether or not it is appropriate to use the word Jingley, it is best to err on the side of caution and avoid using it in any situation.