i told my big brother this is the ONLY time I'm gonna let us play out this fantasy. we both had crushes on each other before our parents got married, but now that we're a family, that's GROSS and we CANNOT keep doing it! he's only getting lucky this time because i caught him masturbating in my room (DOUBLE GROSS BTW) and i finally get to see that cock i've caught teases of through his basketball shorts.