could have fooled me
idiom
—used to say that something seems very surprising or doubtful based on one's own observations
"He's an expert in his field." "Well, you sure could have fooled me!"
Cite this Entry
“Could have fooled me.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/could%20have%20fooled%20me. Accessed 26 Feb. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share