Flash Sentry Made A Bet With Sunset Shimmer that if she wins a race against him on foot? he would do her homework. but if he won? she would be his micro slave forever! sunset was no match against flash as he kept running faster then her that she couldn’t keep up! he won humiliating sunset in the process. he now shrinks her down to size and has her rubbing his sweaty tired soles from running the whole day! she spent all day licking up all his sweaty sole for hours and hours! flash relaxes like a winner while his new foot slave got to work serving his feet!  
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flash sentry & sunset shimmer (c) MLP EG & Hasbro