I licked along the lines of her arse crack and then decided to tease her arse hole – I stuck my tongue deep it into her puckered crevice. She gasped...and her little bum hole twitched back at me ever so slightly which turned me on even more. She turned her head to look back at me and had a sexy sheepish grin on her face and was loving the fact that I was giving that saucy part of her anatomy some attention. “God that feels good” she purred as I started to fuck her puckered bum hole with my. I expected her to run away, or scream at me, but what happened shocked me even more.Kayla sank to her knees and took my cock into her mouth without a word. She was an excellent cocksucker and knew how to please a man. Even though I had cum sad several times in the last few hours, I had been denied for so long that I still had plenty of cum for my little sister. She pulled her mouth off my dick and sucked my balls into her mouth. I groaned in pleasure. “Oh fuck sis, you give a hell of a blow. They have my card number on file. I don't really like to cook that much, especially for myself. I'll be back in a few minutes." With that I practically ran from the room and went to the kitchen to call. I had to get out of there. Calm, I gotta stay calm. I called the restaurant and ordered four large pizzas. I figured what ever we didn't eat today I'd have for lunch tomorrow. I also figured I'd better get back to the ladies and find out how much trouble I'm in. I turned from the phone to return. She looked after Bernie while I finished school, went to university then trained as a doctor for six years. I hardly knew Bernie at all. Now my aunt is sick so I have my daughter back at last. We've lost the bond, however, and we are working on getting to know each other again."At that point the front door slammed and Bernie came in with some shopping."Hi Lyn, you are here already? Sorry I wasn't here for you." We hugged and she looked at her mother. "I see you've met Belle. My Mum. I should've.