Coarsely humorous (6)
I believe the answer is:
ribald
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">coarsely humorous</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ribald that I've seen before include "Humourous in vulgar way" , "Funny, but not nice" , "Humorously vulgar" , "Obscene" , "Coarsely mocking" .)