This Persian construction follows this pattern:
بگو کاری بکن، اگر نکردم
Tell me to do something, do it I would.
بگو چیزی بخور، اگر نخردم
Tell me eat something, do it I would ( or eat it I would)
به من بگو فلان جا برو، اگر نرفتم
Tell me to go somewhere, do it I would (or go there I would)

This inverted construction in English adds the emphasis of the Persian "agar nakardam"

Of course we have the always confusing subject of indirect/direct in English and Persian...this would become:

Say, "Do something." Do it I would
Say, "Eat something." Do it I would.




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Note added at 17 hrs (2015-11-30 00:25:59 GMT)
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Note: we can also, substitute "will" for "would"...not a big difference in meaning, in general