"Alright! I'm gonna climb my big brother! This is gonna be so cool! He's gonna love it when I tell him about this!" Zach said.
Zach jumps up to Matt's heel, and grips tightly onto the material of the old sock. He gracefully pulls himself up, and begins his climb.
"You always have to wear ankle socks, huh?" Zach yells up at his giant unaware brother. He looks ahead at his climb. He'll have to climb some bare skin, and then he can climb onto Matt's jeans.
"It's great that you're wearing skinny jeans!" Zach shouts. "Otherwise I'd have to climb inside your pants, hehe."
Zach grabs a hair on Matt's ankle, and uses it pull himself up.
"I must be really small. Each hair is like a ladder rung!" Zach says.
"Whoa, whoa, whoa!" He shouts as Matt's other foot comes towards him. The socked toes push into his back, and slide him across the naked ankle. Zach reaches out a hand, and quickly grabs another hair, pulling himself free from Matt's toe, he quickly climbs the ankle, and rests on the cuff of the skinny jeans.
He watches breathlessly as Matt's toe scratches at the ankle he was climbing, and rolls his eyes, "Of course you feel that!"
He resumes climbing the back of Matt's calf, when suddenly he gets up from his chair, and begins walking!
"I better hold on tight!" Zach shouts.
Despite the wind roaring around him, Zach continues to climb. He stops for a moment to rest and survey his surroundings.
"Holy crap! I've climbed so high!" Zach said as he looked below himself. He looked around, and recognized Matt's kitchen.
Zach's stomach suddenly growled, and he frowned, "I wonder what Matt's making. Dang, I'm hungry."
Finally, Zach looked up, to see how much he had to go.
"Hahaha," Zach blushed and laughed when he realized he was in the shadow of Matt's round butt. His tight skinny jeans left nothing to the imagination, and it was obvious that Matt took great care of his butt given its round shape, and large size.
"Someone's got a dump truck," Zach laughed. "I bet he's gonna be so embarrassed when I tell him I climbed his butt."
Without further ado, Zach continued.
"Oh, we done in the kitchen? Gonna eat in your room?" Zach said once he felt Matt begin walking. "Oooh, someone's being a bad boy. You know mom doesn't like when you eat in your room."
As Matt continued to walk back to his room, Zach finally reached the base of his right butt cheek.
"I bet I'm the first person in the history of the whole world to climb someone's butt. I'm not even tired--"
Boom!
"Huh?" A sudden noise and movement caught Zach's attention. He turned to look at Matt's right cheek, which was at the tail end of a jiggle.
"Why's that jiggling?" Zach asked, and he soon got his answer.
Matt's left cheek tightened as well as the material of his denim jeans. His cheek began to stretch and rise, and Zach's position began to move.
"W-w-what's happening?!" he yelped. No longer was he climbing on a wall of butt cheek, but it had become a ceiling! He looked down below him, and realized that Matt was climbing the stairs back up to his room!
Boom!
Matt's right foot stomped on the step, and his cheek jiggled, threatening to throw Zach to the ground.
"Oh god!" the tiny teen screamed as he was suddenly thrown into an earthquake as the right cheek jiggled from the impact.
He gripped the threads of the denim even tighter as he felt his center of gravity shift once again, now back to a wall of butt.
The left foot stomped, the left cheek jiggled.
His center of gravity moved once again, now hanging from a ceiling of butt cheek. The right foot stomped, and he was back in the earthquake!
"Oh god! Oh god! Please make it stop!" Zach screamed. His fingers were gripping so tightly, that his knuckles became white. He huddled closely to Matt's cheek, eyes shut tightly, waiting for it all to be over.
After a few seconds of nothing, Zach opened his eyes. He turned his head to see the stairs far behind him.
"Ha... Ha... Haha... Hahahaha!" Zach laughed. "I survived! I survived! Hahahahaha!"
"Man, this thing is dangerous!" Zach laughed as he gave Matt's big booty a slap.
He slowly, shakily resumed his climb, but froze when Matt entered his room.
As the giant big brother turned around, Zach saw that below him was the computer chair.
The smile disappeared from his face as the massive mass of man began to fall, and 90 mile per hour winds assaulted the poor boys face.
The winds only became stronger, forcing him to close his eyes, and taking his breath away.
His stomach was in his throat, and the winds were threatening to throw him off his big brother's butt.
Adrenaline pumping through his tiny body, Zach's instincts take over, and the voice inside his head screams to--!