[SW-452] A mini-skirt panty suddenly appears before the eyes of an adolescent boy! The sisters, who love pranks and H, take their time to taste the boy's erect penis, which has stopped, with full of sexual desire.

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We tested with female staff to see if a pubescent boy would become excited and stand still, staring intently, when his older sister walked by showing off her panties. As expected, we caught a boy staring at panties and took him to another location to show him various panties and monitor his reactions. We collected data on his erect penis from all participants.