Unexpected turn

“Time to give me your ass Sis” Ben said while approaching her aroused but frightened sister. Sue weakly tried to protest while Ben grabbed her and spun her on her hands and knees.

Sue stared at her brother’s mighty cock, as thick as her forearm. Her ass was open, thanks to her fingers and her constantly dripping cunt, but she never had a cock in her ass. She felt torn between her horniness and her fear. But Ben didn’t care. His bloated cockhead pressed between her ass crack, and squirted slimy precum into her puckered asshole. She moaned his name as he sank his massive tool inside her asshole. Her perfect ass was so hot, so incredibly tight, enveloping and massaging his manhood. He bucked his hips forward and his spurting dick thrust entirely inside her ass. Sue screamed, feeling a mixture of pain and pleasure as her pussy squirted a huge load of girlcum on her brother’s massive balls.

"AAAAAAAH! Fuck my ass! Make me cum you son of a bitch! AAAAAAAH!” The compression on Ben’s swollen dick was intense, but he fucked her harder, causing her to yell. Her voluptuous form began shaking wildly, and she shrieked again and again. Ben could feel her asshole pulsing around his big dick as she climaxed. He started slapping her soft cheeks, pounding her without restrain, his cock thrusting back and forth at incredible speed. His swollen balls, as big as oranges, were slapping Sue’s gaping pussy.

Even after all the orgasms he’d had in the last few hours, Ben again felt the tingling that presaged his upcoming release. With a roar, he came, flooding her ass with cum. Sue squealed, the feeling of hot spunk in her gave her a massive orgasm. But Ben’s cock didn’t grow after his orgasm. The massive 14 inch cock didn’t expand in Sue’s overstretched ass. In fact he felt a weird feeling in his groin area. With a groan, an extra cock extruded from his groin right above his other cock. The trio stared with shock at the two identical dicks on Ben’s crotch.