If you are 17 or under, please leave immediately. Sorry for not putting this on sooner.
Steve is at home with only his aunt Gwen. Francine and Stan went on vacation, Jeff and Hayley got enough money for their own place and moved out, and Klaus and Roger were at a concert. Francine told Steve that his adoptive Aunt Gwen was going to come visit for the day.
Steve was on the couch playing video games when there was a knock on the door. Steve paused the game and answered the door, it was Gwen. "Hi, Steve," Gwen said and Steve replied with "Hi, Aunt Gwen". Gwen got inside and sat on the couch. "Aunt Gwen, I'm going to be in the bathroom taking a shower. Don't come in until I'm out, the door's lock is broken."
Gwen went to the bathroom door and opened it, only to find a naked Steve, who screamed and covered himself. "Oh my God, Steve I'm so sorry, I forgot the lock was broken". Gwen got a small, but good look at Steve's penis before he even covered himself. Gwen started to get in heat and she grabbed Steve and started pulling him.
They had just got into Steve's room and Gwen closed the door, locked it and covered the windows with its curtains. "Aunt Gwen, what are you doing?" Steve asked her. Gwen took all of her clothes off, which caused Steve to get an erection. Gwen walked over to Steve and started giving him a boob job. Afterwards, Gwen took all of his clothes off, grabbed him and pulled him into a kiss. Steve was shocked but kissed back. They walked as they kissed, fell on Steve's bed, with Gwen on top of Steve and started tongue wrestling. Steve grabbed Gwen's boobs and squeezed them, which made Gwen moan in pleasure. After 2 minutes, they stopped. Gwen went over to Steve's penis and started licking and sucking it, while she put her vagina in his face and Steve started licking it. After 5 minutes, they decided to get to the main event. Steve rolled him and Gwen over, with Steve being on top this time. inserted his penis in Gwen's vagina and started thrusting. When Steve got to the womb, there was a wall. "Aunt Gwen, you're a virgin" Steve asked and Gwen answered with "Yes". "Why, you're beautiful," Steve said. "I just wanted to find the right person to do it with and I haven't until I decided, it's you." Gwen responded before giving him a quick kiss. Steve blushed and continued thrusting. While thrusting, Steve grabbed Gwen's breasts and started playing the,. They kept going for 10 minutes until finally they were about to have their orgasm. Steve tried to pull out, but Gwen wanted him to cum in and her, so she wrapped her legs around him. He then came inside Gwen after 2 seconds.
The next day, Steve heard his phone ring, it was from Gwen. "Hi Aunt Gwen," Steve said and Gwen said back with "Hi Steve. I have news. I'm pregnant".
9 months later, the baby was born, it was a boy and they decided to call him Joey. Nobody knows that Steve and Gwen are in a relationship, that Steve is the father of his aunt's child, and they both agreed that if anyone asks who the father is, Gwen will say she doesn't know because she got donated sperm.