I've heard that many countries in Europe have their own nobiliary particles. Like "von" for Germanic nations or "de" for French so on and so forth. But, I don't think either the British royals or aristocrats use the nobiliary particles for their surname/title. Why is that?

Could you tell me how to use this expression “that’s that real stuff”?

Good question. "Real stuff" is an informal phrase used to say that something or something is authentic, credible or genuine. Here it is used to show that he has the authentic or "real" abilities of a paperboy. So, "that's that real stuff" here is basically saying that his action is proof of his greatness a paperboy. You can use the expression whenever you want to refer to the authenticity of something. Ex: A. Which drink is the best? B. The purple one. A. Really? B. Yes, that's that real stuff. Ex: This designer is the real stuff. Everything fits beautifully.

What does "X Games" mean?

X Games is the name for a popular extreme sports competition. The "X" in "X Games" stands for "extreme," and since sports can also be called "games," it's also in the name. Ex: I really enjoy watching the X Games. Ex: She wants to compete as a snowboarder in the X Games one day.

What's "left and right" mean?

"Left and right" is an expression which means on all sides, in a quick and uncontrolled manner. Here, "Supreme Court invalidating acts left and right" means "Supreme Court invalidating acts in a quick, uncontrolled manner." Ex: He's just breaking hearts, left and right. Ex: The cat is breaking things in the house, left and right.

What does "pep talk" mean?

Good question! A "pep talk" is encouraging words you give to another person, usually to motivate them about something specific they are going through or going to do, or just about their life in general. Ex: You are our best player, I know you can help our team win the game! Ex: Good luck on your job interview tomorrow, you've practiced very hard for it so I know you'll do well.

What does "for unto you" mean? I'm not familiar with "unto" and also, I don't quite understand the phrase "David a savior," how can I understand the structure of "David a savior"?

"Unto" is a rather archaic preposition form meaning "to." The expression "for unto you" is commonly seen in older documents or literature, such as the bible. However, it is not commonly used today in speaking nor writing. We can understand "for unto you" as meaning "for to you," so the whole sentence can be understood as, "for you a savior was born in the city of David today, which is Christ the Lord." "The city of David a savior" can be read as "a savior (in the city of David). Again, this type of grammar pattern is not commonly used today. In older examples of writing, the subject position may be near the end of a sentence or phrase, rather than after a verb.