Ricky Spanish is doing some homework about male sexuality. He's just reaching the part where he is writing notes about a man being able to hold back on cumming when his stepsister, Cielo West, comes up behind him and sees what he's writing. Cielo claims that Ricky is wrong, that guys can't control themselves with their minds. She eventually insists that Ricky prove it. Ricky tries to tell Cielo that she's his stepsister, so he can't even get hard for her. That just lays down an even bigger challenge for Cielo.

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