What type of figurative language is used in the sentence Happiness is a warm gun?

The phrase "Happiness is a warm gun" employs metaphor as its primary form of figurative language. It suggests that happiness is being compared to a warm gun, implying a complex relationship between joy and danger, or comfort and violence. This juxtaposition evokes strong imagery and emotional resonance, inviting deeper interpretation of both concepts. Additionally, the phrase carries an element of ambiguity, enhancing its poetic quality.