Generated a disguise to get Ben (8)
I believe the answer is:
begotten
'generated' is the definition.
The answer and definition can be both related to bodily activities as well as being past participle verbs.
Perhaps you can see an association between them that I can't see?
'a disguise to get ben' is the wordplay.
'a disguise' is an anagram indicator (I've seen 'disguising' mean this).
'to'+'get'+'ben'='togetben'
'togetben' is an anagram of 'BEGOTTEN'.
Can you help me to learn more?
(Other definitions for begotten that I've seen before include "Get bet on, being born" , "Sort of" , "Procreated, sired, generated" , "Fathered or brought into being by" , "Produced as offspring" .)