It was a Friday night. Jason and Tyler had traveled out of town for a swim meet and I knew they would sleep together. I got up from bed that night and...pulled on my boxers. There was something I had been thinking about doing and that night seemed like the time to do it.I went downstairs in my boxers and listened at Alexander's door. It was quiet. I tried the doorknob and it opened. The room was dark and I paused to let my eyes adjust. A little light came from under the door, but it was mainly. When both individuals impregnated each other simultaneously, that was their definition of 'twins'.Unsurprisingly, human woman were the first to suggest interspecies sex. Tentacle sex groupies began turning up. At first, the subject and acts were banned, as no one knew what would happen, or if a woman somehow got pregnant, what the result would be. Eventually, the scientists suggested studying the possibility, but laws were passed forbidding contact other than the scientific experiments. Women. We sat down at the table, and Eric dished up the food I'd prepared. Thebacon got a little bit crisp, and the French toast was, well, dark, butit didn't taste too bad, and it was filling. Eric did a bit moretalking, though, telling me one or two more things that he knew aboutwhat was happening to me."Holly." He began, after getting settled at the table. "I DO know partof the reason you are so flighty and emotional. I knew it yesterday. Asa matter of fact, I knew it was going to happen, but there. She looked at it and then up at me, her eyes tearful. “I’m sorry,” she whispered. I picked up my underwear from the floor. With my free hand I held her nose shut, then said, “Open your mouth.” When she did so, I crammed as much of my underwear in as would fit. Her eyes went wide. Then I released her nose and walked behind her again. I said, conversationally, “You nasty little girl.” Then I raised my hand and smacked her behind again, much harder than before. Her scream, again, would have been.