いたずら好きな犬が郊外の歩道で慌てふためく郵便配達員を追いかける

Create a dynamic 1950s American comic-book style illustration of a mischievous dog chasing a startled postman down a suburban sidewalk. Use bold black ink outlines, dramatic action poses, halftone dot shading, vintage four-color printing, slightly faded paper texture, and vivid mid-century colors. The postman should have a panic-stricken expression and be running with letters flying from his mailbag while the excited dog races behind him. Add expressive faces, exaggerated motion lines, and a playful sense of chaos. Include a retro comic-book panel composition and a small caption box reading, “YIKES! NOT AGAIN!” Evoke the authentic visual feel of a classic 1950s comic without copying any specific existing comic or artist.