A/N: I love Gravity Falls, and I'm sad to see it's ending. I just thought of this idea during study hall, and it was written in like 20 minutes.

Disclaimer: I don't own Gravity Falls. If I did, there'd be way more than two seasons.

Dipper had been thinking about this for a few weeks. He had been noticing things a little bit differently, and he didn't know what it was. "Mabel, come over here," He said, while his twin made her way from her bed.

"What is it, Dip?" Fifteen year old Mabel asked.

"Stand behind me,"

Mabel did, and he put his hand up above their heads. "Alpha twin! Alpha twin! Alpha twin!" Dipper said, jumping up and down.

Mabel glared at him. This wasn't fair. She was the oldest. She was the one who was supposed to be taller. Mabel was taller than him since they were twelve. That was the one thing she took pride in. "What? Let's get another person's opinion on this," She said, hoping that this wasn't the truth.

"You know height's not an opini-" He started, but Mabel cut him off.

"GRUNKLE STAN!" Mabel yelled, as the two ran down the stairs.

The twins' great uncle emerged from the family room, and saw what was going on. "What's the problem, kids?" He asked.

Dipper sighed. "Mabel thinks I'm still shorter than her," He explained.

Grunkle Stan laughed. Even he knew that Dipper had grown a few inches since the last time they came to Gravity Falls. "Kid, I know you were the taller one the last time you two came, but people grow. Things change,"

"That's just another way of saying I'm short!" Mabel said. "I want us both measured." Mabel demanded, while getting the measuring tape.

Both Dipper and Grunkle Stan looked at each other, and sighed. Mabel came back with the tape, and gave it to her great uncle. "Alright, let's get this over with,"

Grunkle Stan measured both of them. "Face it kid. He's taller," He said, wanting this to be over.

With that news, Dipper started dancing, and singings something along the lines of "Alpha twin!" and "I'm taller than Mabel!".

When he noticed that Mabel and Grunkle Stan were staring at him, his face went red, and immediately stopped. "I-I mean, I'm glad I'm taller than you, Mabel," He said.

"How tall are we?" Mabel asked, seeming to come to terms with this.

"Ok. Dipper you are 5'6", and Mabel you are 5'4," He announced, which made Dipper very happy.

Dipper started to do his dance again, not caring whether the two were watching or not. "Alpha twin! Alpha twin!" He kept on repeating.

"Dipper you win, you're the taller one!" Mabel said, finally admitting it.

"Glad you see it my way, sis. Awkward sibling hug?" He asked, holding out his arms.

Mabel agreed. "Awkward sibling hug,"

Fin.