I am not sure why. Last night my sister surprised me as we were watching a movie. Our parents were already in bed. With the on again off again home/in person schooling we were staying up later than usual. After a mild flash of breasts during a love scene she commented that she bet that I must have liked her b****. I told her for the hundredth time that I didn’t like big b****, but smaller ones like hers. I’m almost 16, she’s almost 18 and very attractive. We hadn’t fooled around for an easy 5 or 6 years though I have kept my interest known to her. We flirted a little over the last few years but she would only be a c*** tease to me a little and I spied on her a lot. She said she wanted to give me an early B-day present. It is today. After going back and forth for awhile about it, teasing me once again, she finally said ok and would give it to me now since I promised not to tell anyone. I was shocked when she leaned over to my end of the couch, reached out and started to rub my d***. I didn’t say a word. I just lifted my b*** to slide my shorts and boxers down at her insistence. She put my semi erect d*** in her mouth and I was rising to heaven- mentally and physically. She stopped after sucking on me for a minute and admired my c*** for a few seconds. She smiled telling me that not only was she impressed with how big it was, but that it was the nicest looking d*** she had ever seen in person. I said nothing and enjoyed a wonderful b******. The only words I said was asking her if I should c** in her mouth as I gently thrust and she bobbed her head up and down. “Umm hmm.” I hadn’t c** in days even with my girlfriend. My sister drooled a little since there was a lot of sperm waiting to squirt. She had some experience sucking c*** and I had a great o*****. She totally finished me off sucking me clean. After our parents were gone for work this morning she brought me to her bed and gave me her sweet tasting and very tight virginity.