No, I am not telling you it is Cockney. What I am saying is that it is ridiculous to believe that you don’t know the meaning of the word “arse”.
See, this has been your problem all along. You can read, but apparently you can comprehend, plain English. You always seem to misstate what people post.
P’raps…the OP didn’t want to get timered for using our spelling of the word.
I don’t care who you caught doing anything? Why should I give a rat's arse?