Yes, they need to be ready for everything

"I think you should clean the mess, sister." You said and look at Sara, who looked confused.

"Dude, no way i'm tasting my brother's cum, touching you dick was not enough for you?" She looked like after she had an orgasm, she could finally thinking straight. "But think of it, we have no idea what they will ask us on the tasks of the show, if you will taste my cum right now, then they will asks it on the show, you will already done it , so it will not be a problem." You try to reason with her. "I guess you right... But only a little, OK?" She said, and you couldn't belive she bought it. Sara, took her finger and smeared a pool of cum from your belly on it, then suck it dry. "I guess it's not so bad, brother. I had worst honestly. " She said and took more cum on her hand, licking it dry. "Sara, i don't wanna hear about the cum you ate from boys." You said, disgusted, "Now you are being disgusted, i'm always teling you about my sex, and we just jack off each other in front of porn, with your favourite pornstar you wanna be your girlfriend, and this is your line?" She laughed, and you smiled to her.

"OK, OK. Now what? I don't think i can watch more porn after this." You said, and Sara smiled to you, "Me neither, go take a shower, i'll make some dinner, and after that go pack your things for the flight. We need to be on time for the audition!"