Rider On The Floor, a seemingly innocent brother, is secretly bound by his sister's femdom rule. Today, The Other Rider On The Floor decides to push his limits further. She makes him wear a tight, see-through jockstrap, his small cock and balls clearly visible. She commands him to stand, pushing his legs apart. She teases his ass, running her fingers around his hole, making him shiver. She whispers, "You're my anal slut, aren't you?" He nods, his face flushing red. She slips a finger into his ass, making him moan, his cock trying to harden against the cage. She denies him, laughing, "Not today, my pet."