Summary
"Merlin's pants!" is an exclamation often used to express surprise, astonishment, or disbelief. The quote derives from Merlin, a famous wizard featured in Arthurian legends and popularized in literature and film. "Pants" in this context is a colloquial substitution for a stronger word, adding a touch of humor to the exclamation while conveying intense shock or awe. The phrase is generally used jovially or playfully to express a reaction that is both unexpected and exaggerated.
By J.K. Rowling