What's next?

"I'D LIKE ONE SIS",

"okay" she says enthusiastically and eager to please her big bro....and he is big, being a virgin and never having had sex or fellated a guy before she figures Rob will be honest evaluating her 'oral & sexual performance' of his monster dick.

Hell even if Mal is terrible at oral and intercourse Rob would still say she was great, I mean his younger sister is blowing and riding her older brother's manhood...every males fantasy, having a pretty sibling gratifying their male organ.

"Better hurry sis, can't hold it in much longer", Mal's mouth swallows his member....her lips are heavenly rubbing on his foreskin, "cumming" placing his hand on the back of her head; She doesn't resist, in fact Mal takes more of Rob in her mouth deepthroating his trouser monkey as he smiles opening the floodgates.