Bored and restless, a sister and brother turn their shower time into a steamy adventure. She's already soaking wet, fingers plunging into her tight pussy as she leans against the tile. He bursts in, catching her mid-thrust, his massive cock tenting his towel. They argue, but lust wins out. She strokes his thick shaft, he touches her clit, and they're soon making waves in the tub, her tight cunt milking his cock until they're both spent and gasping.