Merry prank (8)
I believe the answer is:
escapade
(Other definitions for escapade that I've seen before include "Risky adventure" , "Daring stunt" , "Mischievous romp" , "Piece of reckless mischief" , "Caper" .)
I believe the answer is:
escapade
(Other definitions for escapade that I've seen before include "Risky adventure" , "Daring stunt" , "Mischievous romp" , "Piece of reckless mischief" , "Caper" .)