Sit Back Meaning
(idiomatic) To relax, to not exert oneself.
Example: To recline while still in a seated position, with one's back on the frame of the seat.
Please just sit back and watch the show.
2010 December 28, Marc Vesty, â€œStoke 0 - 2 Fulhamâ€, BBC:
Predictably in the second half it was the Potters, who went searching for goals as Fulham sat back to defend their lead.