And then there are these gems:
I was an exemplary officer,' he added. 'I always turned up to work early, I always dressed smart, made sure my boots were clean. 'My image was perfect and I behaved perfectly with people.
Borders added: 'I admit that I was naive when I first joined the Met. I had a different sense of humour then. 'But meeting people on the job, being involved in delicate matters, it changed what I find funny. 'I still have a dark sense of humour, I still laugh at things that maybe I shouldn't laugh at.'
Borders described his comments as 'dark humour which I appreciate will offend some people'.
He said: 'I was professional on the job and I don't think rape is a joke and I don't think violence against women is a joke.'
He added that he had sent the messages were sent when he had been a training officer and had no experience in domestic abuse cases.
'You can see that the jokes stopped at the end of the year as we all became more mature and experienced,' he said.
Hmm, are we all convinced?