Be a sponge (5)
I believe the answer is:
mooch
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">be a sponge</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 mooch that I've seen before include "bum" , "Move aimlessly" , "Hang around aimlessly" , "Walk aimlessly around" , "Loiter listlessly" .)