A city-dwellers belittling or irritated reference to the suburbs, especially suburbs far from the urban locations which are well-known to the city dweller. To get out to the rabbit trails usually requires a lot of driving, or will make the city dweller get home late, or are likely to cause the city-dweller to get lost. Also referred to as "mother fuckin' rabbit trails". Specifically, I heard this used by an ancient blues musician who hated to drive far away from his home on the South Side of Chicago, but who needed the money.
I played this gig way out in the mother fuckin' rabbit trails, and I got lost on the way out there and I didn't get home until four in the morning.