once around , twice , and still he showed no signs of wanting to stop but i thought it might be best that he do n't burst his noble heart just now and i started pulling back on the reins and at first he resisted , but then he gave in and started to slow and i saw the stable hands running toward us with ropes and i pulls him back harder and he reared up on his hind legs and i yelled in his ear , `` scream , sheiky , scream ! ''