This is another Fatboy313 original, post a review after you finished reading.
It was 1:30 a.m. dipper was reading his number 3 book, and Mable was sound asleep in her bed. Dipper glanced over at her because she looked so beautify when she was sleeping, which gave dipper a funny feeling that he could not explain. God she looks so pretty when she is sleeping, dipper said quietly to him self while trying to read his book, but all he could focus on was his twin sister Mable. "Maybe if I just kiss her I'll be able to get these feelings out of my system". Dipper thought, so he got out of his bed trying not to make a sound that will wake Mable up and he tip toed over to her bed and placed his hand firmly on her cheek, and brusher her hair out of the was reviling her face. Dippers heart stared to pound throw his chest, he got closer to her face and he pressed his lip to hers and to his suprie Mable had open up her mouth, allowing dipper to place his tongue in and explore his sister's open mouth. After 2 minutes of kissing dipper just had to take things further, so he removed his shorts, and boxers and he carefully removed the covers from Mable's body trying his best to not wake her. Dipper then began to pull Mable's dress up to see her panties. "This is so hot" Dipper whispered to himself. Dipper started to remove Mable's panties when he looked down at them and had saw that they were wet, Dipper then turned around to Mable's face which had a smile on it. "Come on Mable I know your awake". Mable started to snore, "Mable if you don't wake up I'm just goanna jack off and go back to sleep". Mable spread her legs and turned her head still pretending to be asleep. "Okay then I'll just think of me and Wendy having sex instead of having sex with you". Dipper said while walking towards his bed. "No"! Mable screamed while running towards Dipper and tackling him on his bed. "No way is that bitch ever going to have you". Mable then began to kiss dipper, while grinding her wet pussy against her brothers throbbing hard cock.