While Diana is peeing into Megan's diaper, Jeff decides to take the risk. Peeking up, he sees that the reason he hasn't been soaked in pee entirely is because of Megan's vagina; The pee is getting caught by the crack and flowing down into it. (That's going to be flooded by the time she's done...)
Not wasting too much time watching, however, he quickly pulls himself up; He's exposed, and a wrong movement can send him sliding back down. So, he runs along the side of the stream, knowing that his best bet is to remain close enough to see it.
He successfully makes it to where Megan's diaper is no longer covering him, allowing him to be seen. Luckily for him, he didn't have far to go from this point, but the flow is a lot stronger as he gets closer.
Seeing how little he had left, he decided to sprint the full rest of the way. Running past, he successfully makes it over to her vagina, where he realizes just how hard he'll have to push to get past the stream. However, for his luck, she finishes peeing right then; However, Jeff had to grab on fast, for she was getting up and was about to grab her underwear back.
Holding on, Jeff squeezes through the crack, making it in safely, although now wondering how Diana didn't feel that. Praising his luck, however, now he had to decide what to do next...