To be in someone's shoes

Context #1

Christine: I heard that Jane's going to break up with her boyfriend.

Veronica: Yeah, she caught him cheating on her. I would break up with him too if I were in her shoes.

Context #2

David: Due to the recent budget cuts, I have to lay off 2 people next month.

Steve: That's going to be hard because I know your employees all have families to care for. I wouldn't want to be in your shoes.

David: Gee, thanks!

Meaning: "to be in someone's shoes" means to be in their situation.  It is used to think about what your would do if you were facing the same things that they are facing.

 http://languagesystems.edu/ 

A small world

Context #1

Tom: So Sara, where are you from?
Sara: I'm from California.
Tom: Really? Me too! Where in California?
Sarah: I'm from San Diego. How about you?
Tom: I'm from San Diego too. Wow! It's a small world!

Context #2

Chris: You know that new girl in our class? Well, I just found out that we grew up in the same neighborhood. We went to the same elementary school 30 years ago!
Sam: Wow! That's amazing. What a small world!

Meaning: "a small world" is used to describe a situation where two people find out that they grew up together, live in the same apartment building, or have something truly amazing in common.

http://languagesystems.edu/