is it just me that has always thought nonce meant paedophile and not just any old pervert. Can kinda understand where rafa is coming from
No, not just you - like the wikipedia article says, "Nonce first came into widespread use in UK prisons, where it is primarily used by prisoners to refer to convicted sex offenders, especially abusers of children."
Wikipedia isn't always right of course, but I can confirm that's true (my Dad was a prison officer).
I was surprised to hear someone had called Rafa a nonce. Also surprised to hear it was used to mean anything other than sex offender, I didn't know any other usage myself.