Skinny dip with me - real kinky! (9)
I believe the answer is:
epidermal
'skinny' is the definition.
(thesaurus)
'dip with me real kinky' is the wordplay.
'with' is a charade indicator (letters next to each other).
'kinky' indicates an anagram.
'me'+'real'='mereal'
'dip' put after 'mereal' is 'merealdip'.
'merealdip' is an anagram of 'EPIDERMAL'.
(Other definitions for epidermal that I've seen before include "Relating to skin surface" , "Of the outer skin" , "Like protective covering" , "Like skin" .)