Good Fences Make Good Neighbors. Not!

The Jones family moves into their new home excitedly planning to put down roots in an established neighborhood known for its abundant and mature mango trees.  To stop kids who live nearby from “harvesting” fallen mangoes, Mr. Jones builds a chain-linked fence around his lot’s perimeter.  What he considers a property improvement triggers a thread on NextDoor about the fence’s ugliness both aesthetically and philosophically because long-time residents of the area pride themselves on the park-like vibe of the neighborhood. Mr. Jones is unaware of this discussion thread and thinks his open gate signals neighbors to step into his garden—as long as no mangoes leave.  Instead, while planting a cut-flower border along his fence, a pit bull enters the yard and dashes towards him snarling. Seeing no escape, Mr. Jones tries to jump over his fence but is unable to clear it and falls astride on the fence.  He feels the sharp spikes as they jab into his perineum. As if that isn’t enough, he begins to feel “sloshing” of fluid in and about his abdomen, but not into his thigh.  Clearly, Mr. Jones is mango rich, but suburbia poor.

Question: Which indicated layer prevents the extravasated urine from running down towards the thigh?