Context #1 – New Job, New Location
Kevin:I heard you got a new job and you have to move away.  Where are you going to live now Vee?
Vee: I got a great
job as a Geologist in a university.  But
it’s way out in the boonies.
Kevin: What do you
mean?  How far in the boonies is it?
Sal:Let me put it to
you this way, it takes about three hours to drive to a supermarket.

Context #2 – Survival trip
Bear: How was your
trip?
Les: It was
great.  It got a little scary because we
were far in the boonies and we were
afraid that if someone got hurt, there would be no help.
Bear: Wow! How far
away in the boonies were you?
Les: Let’s just
say the boonies are a couple of hours away, and we were in the boonies of the boonies. 
So about a two day walk to the nearest road.

Meaning: The idiom “in the boonies” means
a very rural location.  Usually, it means
it’s difficult to reach, even by vehicles; it’s not necessarily a negative
point, but it’s typically thought of as a negative thing.  In context #1, Vee got a new job he really
likes, but the downside is that it’s very rural.  In context #2, Les was in one of the most
remote locations possible.  When he says,
“the boonies of the boonies” he’s trying to say they were in an extremely remote
area.