So, if someone calls you a “Jackson Hole”, they’re implying you’re no good for your word?
The term is older than that.
Jackson Hole ...gets the name “hole” from early trappers who primarily entered the valley from the north and east and had to descend down into the valley along relatively steep slopes, giving the sensation of entering a hole.
The valley is named for David (Davey) Edward Jackson, a mountain man who trapped the area for beaver in the early nineteenth century.
http://en.wikipedia.org/wiki/Jackson_Hole