Indulge (6)
(Other definitions for pamper that I've seen before include "Spoil, cosset" , "Treat with over-indulgence" , "'Indulge, spoil (6)'" , "Treat luxuriously" , "Treat indulgently" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">indulge</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that humour is a type of indulge)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for humour that I've seen before include "See 12" , "Wit" , "The quality of being funny" , "A sense of . . . . . . - the quality of enjoying amusing things" , "gags?" .)