Jeff decided Megan should be his target, and chose to hide in her underwear. He ran over, taking several minutes to reach her feet before grabbing onto her sock.
He looked up, seeing she was wearing Those ones. "Of course it's the pair she always flashes." Jeff had seen this pair far more than he'd have liked; The pawprint design, which Megan commonly lifted her skirt or pulled her pants down to show off.
"Well, at least I'm not invading her privacy As much, seeing as how many people have seen them." Jeff then began to climb up. He found it surprisingly easy; Jeff wasn't the best at climbing, but in this instance he could do it easily.
It took a few minutes, but he made it up to her panties. They weren't hard to get into, but once inside Jeff saw they were extremely snug. "Jeez, is this why she always shows them off? It feels great in here!"
He felt a bit guilty, enjoying it this much. He knew it was his sister, and that she was around half his age. But the environment was nice, the soft fabric with the cool yet moist air. The fabric of her skirt and panties still allowed him to see.
Megan was moving. Jeff could tell, as her legs were moving, and he was being somewhat tossed around. It wasn't bad, however, and Jeff could still get comfortable. The only thing he didn't like, however, was how close he was to her area.
Sitting at the lowest point, Megan's vaginal region was still above him, to where he could reach out and poke it. While this felt weird, and almost fake, this alone left him worried.
Jeff had several options here, though...