Printed from https://web1.writing.com/main/interactive-story/item_id/2232699-Cartoon-Fetish-and-Kinks-Adventures/cid/3031683-Lincoln-Turns-the-Tables-on-Lisa-He-Wants-Sex
Lincoln was thinking of voring Lisa with his cock but then he thought of something else. His member’s tip was beginning to return to normal but his cock was still inflated and large. Lisa was distracted starting another experiment of hers that she didn’t notice Lincoln behind her still with a sinister smile. He then grabs her making her gasp and drop some test tubes making a tiny harmless explosion. She turns her head back and asks, “Lincoln?! What do you think you are doing?”. He replies, “You did say I should play a game to pass the time. So I thought to have a nice fun game of sex with my genius sister”. Lisa gulped as she eyes his cock knowing now what he wants to do. “Wouldn’t you like to seek pleasure from one of our bigger, older siblings instead? Or any of the others?”. Lincoln was getting upset as she was trying to talk her way out. “Oh no... you use me for me for many experiments, just gave me some weird drink that made my cock able to grow and swallow people and rest in my balls, and making me have one of our sisters inside me to prove something. I think it’s only fair you help me pass the time since it is your experiment after all. He then began undressing her removing her sweater then pulling down her pants and panties leaving her naked and making her blush. She then feels his cock sliding between her legs for a bit before pressing his tips onto her lower lips. She moaned and then Lincoln plunges his cock into her sex forming a bulge inside her.
Lincoln started moving his hips back and forth making his cock go deeper while Lisa was pressed against her desk and taking it all. It was then Lincoln noticed something familiar on the table. “Hey... it’s that stuff you gave me to drink and made my cock grow huge and able to swallow Leni”. Lincoln decides to give her a taste of her own medicine. “Let’s have you get a taste”. He forces her to open her mouth and gulp some of it down some of it going too fast and almost choking from it. “Why did you do that Lincoln?”. He responds, “Just wanted to see what else that stuff can do”. “We only know based on your results what it does to a male. I wanted to test it on one of our sisters on what it do-“. Lisa cut off mid-sentence and started moaning. Lincoln watched as Lisa’s flat chest began to inflate two two large breasts and then felt her ass inflate and pressing against his hips. “Woah... that is quite an upgrade”. “Interesting... an increase of mass in the chest and posterior area. I wonder if there are other changes”. Lincoln cuts in, “You can worry about that later. But for now...”. He then continues to thrust his hips against her ass and continues to slid his cock into her pussy. His balls bounced as well and later they hear a voice coming from the radio. “Hey guys... what is going on out there? Everything is shaking like crazy in here”. They then heard Leni coughing as some cum splashed in her mouth. Lincoln and Lisa were too preoccupied to hear her anyways as Lincoln was in bliss feeling his cock inside Lisa’s now thiccer small body. Lincoln was feeling that urge to cum so he moves even faster. “Man, your body feels so good Lisa but I’m going to cum soon”. “Hold on Lincoln. If you release any cum you could ruin the experiment”. He replies, “Not a chance. Have you seen my balls? I’m sure there’s more than enough of my cum for Leni to be soaking in”. “That’s... not my main concern. You might let Leni oooouut!”. Lisa moans loudly as Lincoln one last powerful plow and a large stream of cum came flowing out his cock and enter Lisa’s causing her belly to inflate a bit.
After he was done releasing his load Lincoln can still feel Leni wiggling around inside his testicles meaning Lisa won’t be upset with him. Lisa was breathing heavily as she did enjoy it though it was not planned by her. She looks back at Lincoln and asks, “Are you satisfied with me taking part in relieving you during my experiment?”. Lincoln thinks...
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