Charlie Brown expletive (4)
I believe the answer is:
rats
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">charlie brown expletive</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for rats that I've seen before include "Rodent pests" , "deserters" , "Snoopy's imprecation - vermin" , "Curse" , "Treacherous rodents" .)