I persuaded my wife to get naked and masturbate in some Spanish dunes whilst I video'd her - and it took quite a bit of persuading.
But she did do it, stripping naked then laying down rubbing herself with legs akimbo!
She had her eyes closed and I was concentrating on getting good angles - so neither of us heard a guy walk up and stand next to me watching!!
It was only as she finished cumming that I heard a noise to my right and saw the guy walking away - she was so embarassed, but I reckon turned on by it because she will occasionally mention it during sexy times
