Wild prank (8)
I believe the answer is:
escapade
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wild prank</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for escapade that I've seen before include "A reckless or mischievous adventure" , "Mischievous exploit" , "Piece of reckless mischief" , "Madcap adventure" , "Risky venture" .)