A/N: Dipper being trans is like my favorite Gravity Falls headcanon ever and I wanted to do something with it so here's a super duper short sibling fluff thing
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Hair
by SilveMoonGrimm
"You need to cut your hair," Wendy joked from her spot at the desk. "You're starting to look like a girl with all that."
Dipper immediately crossed his arms defensively. "Excuse me?"
"Whoa! No need to go all cold on me. It just looks like you haven't touched it all summer. You're due for a trim."
"Oh." That was true; after the initial hack on the bus ride to town (a full ten inches), Dipper had just let his hair alone for the rest of the time here. He pulled at the end absentmindedly. "I was thinking about letting it grow a bit longer for when I go back."
"Really? Okay."
"Yeah. Might be less of a shock for my parents."
Now Wendy looked confused. Dipper backpedalled. That was too much information. He shouldn't have said that much. Instead of expanding, he blubbered a few incompatible words before beelining to his and Mabel's room.
Thank God, it was empty.
But wait- Mabel erupted from under her bed with a triumphant "Yes!" and thrusting her fist into the air. "Found you, Waddles!"
Dipper ignored her and her newfound pet and crawled onto his bed, pulling out the notebook and flipping to a random page. A page where things that aren't 'normal' are real and justified. Just because they didn't fit in, didn't mean they were imagined or being faked.
That's what people always told him; he was faking it. He was making things up. He was too young to know.
Well, he wasn't too young to know about secret societies or shrinking devices. Why not about his basic identity?
"Are you okay?" Mabel crawled next to her twin. "You don't look super excited about today."
"It's nothing." He tried holding up the journal to block his sister, but she just slid closer.
"It's obviously something!"
Now Dipper was only pretending to read the journal.
Mabel understood and sat next to him silently, which he knew was a real effort for her.
"Wendy said I needed a haircut." He finally admitted.
"It is getting a bit shaggy." She pulled at one of the locks. "Even more than before."
"She said I was starting to look like a girl."
"Oh." Dipper didn't look at her, at her reaction. "You don't look like a girl to me."
"We're identical. I do. She said I should have it trimmed."
"I can do that."
"But Mom and Dad-"
"They'll just have to deal with it."
Dipper smiled. It was nice that his sister was trying. "Do you think you can cut it really short?"
Mabel frowned. "What about your birthmark?"
"That doesn't matter. I want it so short it won't grow back for a long time."
"Well, then you've come to the right place, brother of mine!"
Perhaps he should have been a bit horrified of his sister having scissors and using them on his head, but, at the moment, he really wasn't.