A young woman stands on an empty side street, aroused and embarassed as she begins to climax in public while on vacation overseas.
Her unexpectedly elated older sister stands nearby with their shopping bags, secretly happy with the results of her prank.
Having stealthily added some local aphrodisiac she obtained at a local shop into her younger sister's cafe latte earlier in the day, the younger sibling is unable to resist her urges as the caffeine and some previous dark chocolate ingested assist the additive in the orgasm, her juices squirting through her pantyhose onto the ground.
Both perverted sisters expect some sort of revenge to be in order for this indecent act.