The term used for when a golf course is at full capacity. Usually a term used by employees to describe the course situation to customers. Originated from the english words Jarred and Ville.
Employee "good afternoon, Marky speaking"
Customer "hi, do you have anything for a two some in 30 minutes?"
Employee "sorry sir, its fucking jarsville here today"
Customer " so you can't even squeeze in a two ball?"
employee " like i said sir, it looks like J town out there"
Customer "thanks, i will try another day"