"We will be sitting on the couch. You need to bring us another beer. Now!"Too nervous to protest, I did as I was told. After giving them what they ...anted. I was spun around and faced away from them and told to rest on my knees. Ok. no problem. I felt an experienced hand cuff my wrists together while another wrapped another...something around my neck! Felt like cloth and immediately realized it was a collar! What the fuck! And a leash attached to it too! What have I gotten myself into. . This lazy movement exposed my sister's hidden asshole. If I felt in heaven when she showed me her pussy, I was in hell after seeing her asshole. It was very hot. This tight, wrinkled, hidden hole between my sister's cheeks was the centre of all my kinky, hot desires. By this tight, hot, hidden hole of her she can force me to do whatever she wants.She touched her asshole with the middle finger of her right hand and it tightened immediately."I told you: it's quite sensitive."She ran her wet. "Where... are we going?" he said.As the words left his lips he realised probably because of the tightcollar that his voice sounded a bit higher and more whisper than usual."It's a surprise but I like how you are getting into character," she said."It's not really me. It's the collar it's a bit tight," he responded."Oh don't worry I'll sort it out when we arrive," she said with a smile."You are not worried I am going to take advantage of you, are you?" shecontinued with a wink.If it wasn't Fi. I didn’t buy you anything, so I’m sorry about that.” “I’m so sorry… I didn’t realize it was today.” “Well, there’s one way you can make it up to me.” I reached in and touched my glossed lips to hers. She kissed me back gently, wrapped her arms around me and rubbing my back gently. We’d never gone farther than a small kiss on the lips, and that was enough to nearly drive me insane. I could feel myself getting wet, and I carefully picked her up. Not breaking our kissing, I sat down on the couch,.