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Printed from https://www.writing.com/main/interactive-story/item_id/1976955-Giantess-futanari-sister/cid/1759021-Changes
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by Alto Author IconMail Icon
Rated: XGC · Interactive · Erotica · #1976955

Your sister and starts to grow into a giant, and she also grows a dick

This choice: Does she look a bit taller  •  Go Back...
Chapter #6

Changes

    by: Alto Author IconMail Icon
You gaze at your younger sister as she starts to chug the gallon of milk. Her tank top that she was wearing was riding up almost to the bottom of her young developing breasts. "Sam" you start to say but you stop in awe at the rate that she was downing the milk. It had only been a few seconds but she was already halfway done with it. You know from the internet that most grown men can't finish a gallon of milk, let alone an 11 year old girl. GULP, GULP, GULP. You continue to watch as she continues to down the contents of the container. Her esophagus was moving up and down in a rhythmic motion with every gulp. She was going so fast that little white streams were dripping from the sides of her mouth and down her chin.

"Sam" you try to get her attention again as she was finishing what was left of the milk. With one final chug the whole gallon was gone. "Sorry John, did you say something" she asked as she pulled the empty milk jug away from her lips and threw it across the room. "Ummm yeah, did you get taller" you asked even though you didn't need to. You were both standing face to face and she was a good 3 inches taller than you, and you were 5'11". Sam looked down and said "Oh yeah, I guess I am" with a smile on her face.

"Sam this is serious" you say as you try to give your sister a reality check. "This is bad, we have to get you to a doctor" you try to explain but are suddenly cut off. "BBUUUUUUUUUUUUUUUUUUUUUUUUURRRRRRRRRRRRRRRRRRRPPPPPPPPPPPPPPPPPPPPPP". An enormous 7 second, deep, long, chunky, milky, belch exploded from your sisters mouth interrupting you. Because you were standing so close to her you felt the full force of it. It smelled so horrible that you almost gagged on the milky stench. "Hehehehe" Sam giggled away at the look on your face.

"Sam this isn't funny".

"Sorry bro" she says. You try to talk to her again but then out of the blue she just takes a step towards you and almost knocks you down after bumping her shoulder into yours. It felt like you got in the way of a 300 pound man. "Out of my way I gotta pee" Sam commanded as if she was a bully. She was obviously getting a lot more aggressive and had no intention of acknowledging her brother. "Sam what happened to you"? The only thing you heard as she was walking away was the sound of another belch as she walked into the bathroom.

Being your gross sister she never closed the door when she went to the bathroom before, and she certainly didn't start this time. You try to catch your breath but are startled when you hear her scream from the bathroom. You run to see what happened now and you see your sister with her sweat pants around her ankles, standing in front of the mirror. You don't want to see your sisters cooter but something else grabs your attention from the mirror reflection. Instead of a vagina your sister had a big fat cock. You faint immediately.
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