The guy spies on his stepsister all the time by masturbating and she wants to end it. She makes a deal with the guy she jerks off to so the guy will stop bothering her. The girl gives him a blow job so that the boy ejaculates faster, covering his dick with saliva. The girl gets so horny that she rides the stepbrother's hard cock until the boy ejaculates into her pussy, and she gets angry about it