that they (we) like to seperate talking about our sex lives (27 per cent) and the missus (26 per cent).

does anyone talk about their sex life involving their missus ?

How about toilet humour? That normally seems to be a significant portion of conversation. Eg..."I just cranked out a good one"...

Any bloke who denies it is lying :-)

Where are all the "my Astra would beat the pants off your Pug any day" punters?

Of course not! Far better to discuss one's sex life involving women that are not one's missus. Or, if such a life is lacking, to discuss what one wishes one's sex life involving such women was.