Final answer:
Real culture differs from ideal culture, as evidenced by the incongruity between the societal expectation of teenage celibacy and the actual rate of teen pregnancies. Culture shock can further illustrate these differences when individuals confront unfamiliar cultural norms.
Step-by-step explanation:
An example of a situation where real culture diverges from ideal culture involves the values that American teenagers are encouraged to hold regarding celibacy. Despite societal values suggesting abstinence, the high number of unplanned pregnancies among teens indicates a significant gap between the ideal and the reality. This shows that while ideal culture represents the standards that society aims for, real culture reflects what actually happens in society, often falling short of these principles.
In addition, an American experiencing culture shock in Italy by longing for 'real' pizza or critiquing Italian driving habits exemplifies the struggle when encountering different cultural practices. The American's perspective is influenced by their own cultural standards, which may not align with the Italian culture they are experiencing, thus creating a discrepancy between the cultural ideals they are used to and the reality they are faced with.