You could be right. On a par with those that claim they have walked into a pub in Wales and the locals change from speaking English to Welsh. Not taking account of the fact they may well have been already speaking their native tongue before that person walked in.
Overheard on a bus between Newport and Cwmbran
White man sitting in front of a mother and her son. Mother was wearing a niqab. After about 5 minutes of the mother talking to her son in another language the man, for whatever reason, feels the need to tell the woman "When you're in the UK, you...