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

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

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

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