You keep at it

You try to keep at it, but it's difficult. You move a couple steps, then you stop. Then you move a couple steps, and you stop again, all the while Master yells at you to increase your performance.

Your teeth gritting on the gag, you try doing it numerous times... And at one point, you actually pick up the pace, and you start doing a respectable job at cleaning the garden. But then you finally peak, and you start losing your senses... Only to keep at it, and orgasm while you keep mowing the lawn, your fluids dripping on the ground as the dildo keeps tormenting you.

“Careful with that juice!” you hear Master say. And you decide to keep at it.