Two tourists got a big surprise when they spoke in French so a police officer would not know they had marijuana after they had been stopped on the outskirts of Broken Hill in far western New South Wales.
The policeman also spoke French.
The pair were travelling in a hired van and were stopped for a random breath test on the Barrier Highway, west of the city. Police say when one of them was asked for his licence, his companion said in French, "Don't pull it out when you show him".
The officer replied in French that he understood what they were saying and asked what it was they did not want taken out.
The pair apparently looked at each other in surprise.
Police took 13 grams of marijuana in resealable plastic bag from them and they were taken to the police station.
The 23-year-old and 24-year-old gave police an address in France and were given a cannabis caution and sent on their way. Cautions are issued to people of good character when only small amounts of the drug are found.