I didn't know how to wake her up — I stuck my fingers in her pussy and it went

Sister sleeps with her ass out, and her balls are already ringing with desire

Where are you going? I haven't come yet. Spread your legs so I can satisfy you

Make her guilty and then offer to make it up to her — it works

I make sure he doesn't come inside - when you finish fucking him, put his sperm on his tits