Prank, romp (8)
I believe the answer is:
escapade
This clue is a double definition.
'prank' is the first definition.
(I've seen this before)
'romp' is the second definition.
(I've seen this before)
(Other definitions for escapade that I've seen before include "Adventurous T [TREAT]" , "Wild adventure" , "A reckless or mischievous adventure" , "Risky adventure" , "Daring adventure" .)