An insulting term used to describe people who are stupid or irritating, and is generally applied to hicks. The word is usually used by a hick to insult another hick. The word originates from a farm town in Minnesota. An example of a jasky would be a person who looks unintelligent, has a stupid nick-name, and is currently in the act of doing something that would be considered ridiculous or moronic.
I saw a jasky on my property today poaching deer.
That jasky stole my tractor.