She gasped lightly, rolled her hips then let her breath out of partially open lips, my erection damn near split open with the heat and pressure. I tried my best to ignore the cause of my growing arousal but my sister was too near. I played with my sister’s tits while she slipped a hand over my prick and began to encourage another session. My sister Helen flipped to her side away from me as if to sleep. After a short tussle I gave up and told Helen “I’m with you again.”
She looked at the dog then at me with amused eyes, “I don’t think you have a choice, turn your back while I change.”
She was behind me, asleep I think, but I wasn’t. She jammed the sock in her mouth again then arched her back, pressing her ass against my groin. Fuck it, I was cold, the dog owned my bed so I crawled across the small space between the bags then lifted the top of Helen’s and carefully laid beside her.
