back seat

noun2

1. •
   Any of the seats in the rear of a vehicle.

   • Gotta catch my bus, I see my friends Kickin' in the front seat Sittin' in the back seat Gotta make my mind up Which seat can I take? — 2011
2. •
   A lesser or inferior position; a position of deliberate noninvolvement, in which decision-making or leadership is left to others.