Derren Brown - Trick of the mind - The abandoned wallet

Derren Brown - Trick of the mind - The abandoned wallet:

"Most people can be wrongfooted if you behave in a way that's unexpected. Once I was walking along a street when a man said threateningly: 'What are you looking at?' I answered a completely different question, saying: 'The wall outside my house is not 4ft high.' He looked dumbfounded and repeated his question. I again gave a completely irrelevant answer, saying: 'I used to live in Spain.' He was so perplexed by my failure to respond in the way he'd anticipated that he gave up and ran off."