What does "lampoon" mean?

The term "lampoon" specifically refers to a sharp, often satirical piece of writing or art that ridicules its subject. It is characterized by its intent to criticize or mock a person, institution, or societal norm, often through exaggeration or irony. This aligns perfectly with the notion of "sharp satire," which implies a keen and incisive critique that aims to expose and undermine the flaws of the target.

In contrast, the other options do not capture this nuanced meaning. "Simple humor" suggests a light or straightforward approach to comedy without the critical edge inherent in a lampoon. "Serious criticism" lacks the humorous aspect and is more aligned with formal critiques that are typically devoid of satire. "Lighthearted banter" implies a playful and friendly exchange that does not carry the cutting intent or critical depth associated with lampoons. Therefore, the choice of "sharp satire" encapsulates the essence of what a lampoon entails.