Street kid gets one punter riled (11)
I believe the answer is:
guttersnipe
'street kid' is the definition.
'guttersnipe' can be an answer for 'kid' (I have seen 'poor kid' mean 'guttersnipe' so perhaps 'kid' could also mean 'guttersnipe'). I am not certain of the 'street' bit.
'gets one punter riled' is the wordplay.
'one' becomes 'i' (Roman numeral).
'riled' indicates an anagram (letters must be irritated or riled up).
'gets'+'i'+'punter'='getsipunter'
'getsipunter' with letters rearranged gives 'GUTTERSNIPE'.
Can you help me to learn more?
(Other definitions for guttersnipe that I've seen before include "Scruffy street child" , "poor kid" , "Street urchin" , "Person behaving as one brought up in squalor" , "(Neglected) child of the streets" .)