Watching a movie with my sister ended with a blowjob and passionate sex

When the sister was sitting on her brother's lap while he was watching a movie, she saw his penis pop out of his underwear. Without thinking twice, the sister took his cock in her mouth and began to gently suck it, stroking his balls with her hand. Then the girl stood in front of her brother and began to give him a sloppy blowjob with saliva. And after the blowjob, he put his sister on all fours and fucked her.