"You guessed it" is an expression used to confirm that the person being spoken to has correctly guessed or answered something. In the given context, "Ding, ding, ding, we have a winner!" is an exclamation indicating that someone has made the correct guess, similar to hearing a bell ring to indicate success.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: "Ding, ding, ding, we have a winner!". Explanations are generated by AI and may be inaccurate.