The Times' Charles Bremner translates: " In the clip Sarko gives a taste of his rough side at the annual Paris Agricultural Show. When Sarko approaches while shaking hands with the crowd, the man on the left says (in ungrammatical French): "Don't touch me". Sarko replies: "Then get lost". The man: "You dirty me when you touch me". Sarko: "Then get lost, pauvre con." This translates roughly as "stupid a-hole", stupid sod, or the equivalent."
The lesson of the video for all politicians is that the camera is nearly always on.