What does "mother and son" mean in Beijing dialect?

The word "pockmarked" in Beijing dialect is a modal particle used by girls and daughters-in-law to express their first surprise, which means the same as "God" and "Yo".

Example:

1. Mom, I'm a big boy too. Don't give me a red envelope

2. Oh, my mother, my old car is more than 9 years old! Scared me to death.