Definition & Meaning of "hot diggity"in English

What is the origin of the exclamation "hot diggity" and how is it used?

Hot diggity is an exclamation used to express delight, excitement, or amazement. It appeared in American English in the early 20th century, likely as a playful, rhyming euphemism with no direct literal meaning, following a trend of creating whimsical expressions for strong positive reactions. People used it in everyday speech, radio, and popular culture to convey enthusiastic approval or joy. Today it sounds cheerful, old-fashioned, and inoffensive, often adding a whimsical, upbeat, or humorous tone to expressions of excitement or pleasure.