The term 'quirk' refers to a peculiar or unexpected trait or behavior, often seen as unusual or distinctive. In the context provided, it is used to describe a strange phenomenon observed during the 2006 World Cup tournament. Therefore, the correct answer is B, as it directly relates to the definition of 'quirk' as a peculiar behavioral trait. Options A, C, and D do not accurately reflect the meaning of 'quirk' in this context, as they refer to unrelated concepts.