"Love is putting someone else's needs before yours" what do you think of this one?

Hi guys. Nice day. After learning pirf 4, I have some confusion. This part is about George breaking up with his girlfriend Marlene. He compares the whole painful breakup experience to a prison break. There is one confusing detail in his fantasy monologue: I get to the top of the wall, the front door. I open it up. I’m one foot away. I take one last look around the penitentiary and I jumped. My questions: 1. In real‑world prisons, the top of the wall and a front door are two completely different places. Why does George say the top of the wall is “the front door”? 2. At the end he says “I jumped”. If this is an escape, you jump over the wall. But his words mention opening a door. Is this purely a funny metaphor? Does “the top of the wall” stand for “the front door to freedom”? That’s where my confusion comes from. What is your understanding?