it's your turn

Lift your right arm, she said.
I lifted my right arm.
Lift your left arm, she said.
I lifted my left arm. Both of my arms were up.
Put down your right arm, she said.
I put it down.
Put down your left arm, she said.
I did.
Lift your right arm, she said.
I obeyed.
Put down your right arm, she said.
I did.
Lift your left arm.
I lifted it.
Put down your left arm.
I did.
Silence. I stood there, both arms down, waiting for her next command. After a while I got impatient and said, what next.
Now it's your turn to give the orders, she said.
All right, I said. Tell me to lift my right arm.
[Peter Cherches, 'Lift Your Right Arm', from Condensed Book]