Spectator on toilet when kerfuffle starts (8)
I believe the answer is:
onlooker
'spectator' is the definition.
(I know that onlooker is a type of spectator)
'on toilet when kerfuffle starts' is the wordplay.
'on' is a charade indicator (letters next to each other).
'toilet' becomes 'loo' (loo can informally mean a toilet).
'when' becomes 'on' (I've seen this in other clues).
'kerfuffle starts' becomes 'ker' (I can't justify this - if you can you should believe this answer much more).
'loo' after 'on' is 'onloo'.
'onloo'+'ker'='ONLOOKER'
Can you help me to learn more?
(Other definitions for onlooker that I've seen before include "He stands and watches" , "Non-participant" , "Bystander" , "Spectator" , "Person watching" .)