Piece of fudge? (3)
I believe the answer is:
fib
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">piece of fudge?</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for fib that I've seen before include "One must be 20 [UNTRUE]" , "Little white lie" , "Story" , "Small lie" , "Trivial lie" .)