David Cameron views aftermath of immigration raid

The video discusses customs and new customers, a scenario where a man defends his wife's pizza, and communication challenges where someone doesn't speak for another person.

What does the speaker imply about the presence of customs?

What can be inferred about the relationship between the speaker and the new customers?

What situation is described regarding the speaker's wife and pizza?

How does the speaker feel about defending his wife's pizza?

What does the speaker mean by saying 'he doesn't speak for you'?