I think it could mean cartoons that have a theme of squeeze in a funny way. For example, characters getting squeezed into tight spaces and making funny faces, or maybe a story where something needs to be squeezed to solve a problem and it's done in a comical way.
Such cartoons often use satire and exaggeration to highlight certain traits or actions of party bosses. They can bring attention to issues and spark public discussion.
Water in black and white cartoons usually gets represented through basic strokes. It could be shown as smooth curves to imply calm water or jagged lines for a more turbulent look. Also, shading is used to add depth and volume.
The act of a boy raising his hand in a cartoon can symbolize various things. It could be that he's confident and ready to contribute, or it could be a sign of seeking help or approval. Sometimes, it's just a way to add interaction and movement to the scene.