“At Swim-Two-Birds” is a novel written by Irish author Flann O'Brien, published in 1939. The story is known for its complex narrative structure, blending multiple layers of storytelling. It follows a young man who writes a novel about a character named Dermot Trellis, who in turn creates his own characters that rebel against him. The book is celebrated for its innovative use of metafiction, where the boundaries between fiction and reality blur. It features a mix of folklore, humor, and philosophical themes, making it a significant work in modernist literature. The novel has influenced many writers and remains a subject of literary analysis.