It's a quite famous painting called The Lovers by Magritte, and it's usually interpreted either as meaning that you can never truly know even the people you love, or just some other kind of frustration over being unable to connect.

I would say putting it in this context makes for an interesting reinterpretation.

Well-known paintings are sometimes used as metaphors and shorthand. I think it's fun.

I'd say that you get a strong emotional or visceral reaction out of it (it's grotesque, you don't like it, etc.) may speak to its power. It was perhaps drawn out of an emotion you are simply recognizing.