The term 'clever prank' can be summarized by two crossword solutions: DIDO (4 letters) and LARK (4 letters). DIDO is a character from Greek mythology who was known for her cleverness and cunning. She was the founder and first queen of Carthage. LARK is a type of small songbird that is known for its playful behavior and singing. It is also associated with mischief and trickery. Together, these two words represent a clever prank or mischievous act.