Definition & Meaning of "suffering succotash"in English

What is the origin of the exclamation "suffering succotash" and how is it used?

Suffering succotash is a playful, old-fashioned expression strongly associated with mid-20th-century American cartoons, most famously used by Sylvester the Cat in Looney Tunes. It functions as a minced oath, softening stronger profanities while retaining expressive force, giving the phrase a humorous and theatrical impact. Its tone is whimsical and exaggerated, making it feel both nostalgic and cartoonishly dramatic, suitable for conveying surprise, disbelief, or mild vexation in a colorful, distinctly American style.