Onward and upward

I couldn't help but look upward, her giant chest heaving as she took each breath, each breast dwarfing my small size. I let out a sigh before I start climbing her thighs, using the spaces between the threads of fabric as hand and foot holds. Quickly making it to the top, I glance down between her thighs at the dark abysse, imaging what would happen to me if I took a tumble downward between her thick thighs. I shake the thought out of my head, looking back up at the goal hanging low above me. I ponder if I should climb the inside of her shirt or the outside, finally deciding on the outside due to how tight it was as I placed my foot on the first roll of fabric, her stomach rising and fallingw underneath me with each breath. I soon come to the underneath of her breast, wondering how I was going to get around them when she suddenly adjusts her hair, a strand swinging close as it hung there like a rope. I grasp it, pulling on it to see if I get a response before continuing on up and over. I take moment to catch my breath, looking down at the deep canyon that was her cleavage. A sudden burst of laughter made her tits jiggle like an earthquake, knocking me off my feet and send me tumbling down into the canyon I was just looking down at.