It was a normal day in gravity falls, for gravity falls standard's that is.
The twins Dipper and Mabel were investigating a strange cave they had found while walking through the woods.
"hoaooo this cave sure is big, don't you think Dipper." Said the female twin, Mabel.
"yes, it is, Mabel…now please stay quiet… for all we know this place is full of bat monsters or something." Said the male twin, Dipper.
"like a vampire… a hot vampire…that would be great." Said Mabel now starting to have fantasies of a sexy vampire boyfriend."
Dipper rolled his eyes and said…
"you should really stop reading those vampire novels, you know."
"o come on those novels are awesome; you just don't understand it."
"yeah, sure." Said Dipper, not convinced.
They continued walking for a while, till they saw something glowing.
"hey look." said Dipper pointing in the direction of the glow.
Then the two twins approached the glow and then they saw a weird glowing pink crystal stuck on the rock. Lincoln then approached the crystal with to get a better look.
"I ask myself, what this is." Said a curious dipper before trying to touch the weird looking crystal.
Then suddenly his sister of all the people, advised him to not touch it.
"bro please do you remember the last time you found a weird crystal." Said Mabel.
Lincoln then remember what her sister was talking about…the size altering crystals and how much problems they caused to them. Even so the twelve-year-old boy couldn't resist his curiosity and touched the crystal anyway.
Then when he touched the pink crystal, it emitted a very bright flash which caused dipper to scream.
"haaa." Screamed Dipper.
"dipper" shouted Mabel worried for his brother.
Then everything went black for Dipper.
…
Dipper then started to pen his eyes and saw a familiar face…his sister looking right at him.
"oh, Mabel it's you…how much time I've been passed out?" asked the younger twin, for which Mabel responded with a strange facial expression…
"for about 10 minutes."
Dipper then looked at his sister weird facial expression and…
"why that weird face, did something happen?" asked Dipper now starting to get worried.
"well…" said Mabel before picking a pocket mirror, and showing dipper his reflection.
Dipper then took a look at himself and…
"why do I have long hair…wait my voice…don't tell me that…"
Dipper then looked inside his pants and said…
"it's gone."
Dipper immediately entered in panic, and started running around the cave while screaming.
"I'm a girl…this cannot be happening." Shouted the boy turned girl.
His or rather, her sister then tried to calm her down.
"come on Dipper, this is not so bad…" said Mabel.
"how is it not so bad." Said a stressed dipper.
"well I always wanted a sister…and maybe now you will start to understand my tastes…like boy bands…and vampire novels." Said a smiling Mabel.
This caused dipper to became even more stressed.
"please don't tell me that." Said Dipper with a scared expression.
Mabel then looked at her new sister and said with a curious tone…
"so…what we going to tell grunkle stan."
Dipper then opened his eyes as humanly possible and shouted…
"oh no."
An hour later at mystery shack…
The twins entered the shack only to be received be their great uncle stan who immediately asked with a somewhat angry tone…
"so, where you two went, to come so late?"
Then Mabel responded…
"o nothing of special…just a little walk through the woods…right Dipper."
She then touched her "brother" with her elbow and he/she said with fake smile…
"yeah…just a little walk through the woods."
The great uncle then looked at Dipper with a face of curiosity.
"your voice sounds a little strange…are you sick?" asked the old man.
Dipper hearing sweated a little before regaining his/her calm and…
"what, no its just your impression." Said Dipper while trying to deepen his/her voice.
"okay then…fewer medical bills I guess." Said stan before leave the twins alone to take care of other things.
After this the twins immediately ran to their room as fast as possible.
Once there dipper took out her cap revealing her long hair she had hidden inside of it.
"my god, that was close." Said dipper now a little calmer.
His sister meanwhile was smiling a little before saying…
"yes, but you know he is going to find out eventually."
"please don't tell me, I know that, my god this is worst then the time we swapped bodies, at least when that happened, we could pretend by each other" Said Dipper before picking the journal and trying to find a way to return to normal.
"come on, there must be a way." Said Dipper while looking at pages of the journal.
Her sister meanwhile continued smiling.
Dipper noticed this and became a little angry.
"why are you so happy, I been turned into a girl." Said Dipper not understanding her sister.
Mabel then looked at her brother turned sister and said…
"oh sorry…but like I told you back at the cave, I always wanted a sister…and now I have one."
Dipper couldn't believe what her sister had just said.
"you got bee kidding don't you know how stressful this is for me, my whole identity, my whole life was been turned upside down." Said dipper a little pissed off.
"o come on Dipper being a girl isn't so bad." Said Mabel with a smile on her face.
"but…" said Dipper before being interrupted by someone shouting.
"kids, its time for dinner come quickly." shouted grunkle stan.
Hearing this Dipper said…
"we will continue this conversation later."
"sure." Said Mabel.
Dipper then putted her cap on while hiding her long hair inside of it.
"I better find a way to fix this soon, and before anyone finds about it specially Wendy." Thought dipper, imagining the scandal and mockery that would happen if someone found out.
"so, you come or not." Asked Mabel.
"what…ah…sure." Answered Dipper after finally stooping thinking about his problem for a moment.
And so, both of the twin sisters went to eat.
To be continued…