Peer into kinky porn so right to quit (5)
I believe the answer is:
snoop
'peer' is the definition.
(thesaurus)
'kinky porn so right to quit' is the wordplay.
'kinky' indicates anagramming the letters.
'right' becomes 'r' (common abbreviation).
'to quit' indicates named letters should be taken away.
'porn'+'so'='pornso'
'pornso' with 'r' taken away is 'ponso'.
'ponso' anagrammed gives 'SNOOP'.
'into' acts as a link.
(Other definitions for snoop that I've seen before include "Furtively look around" , "-- Dogg, US rapper; spy" , "Stick one's nose in" , "Be nosy" , "Investigate; pry" .)