A nun is riding the bus. To her surprise, the man behind her puts his hand on her. He is smiling. As she leaves the bus, a voice comes from inside her head: "Don't you get it? The joke is that a nun got molested. It's hilarious."
The nun looks at herself in the mirror, but her face melts. Her clothes melt too. She realizes that her whole life is a joke. She realizes that her entire existence is nothing but a joke.
Everything is melting now. The bus is melting.