Since we have different personas and ways of behaving in different groups of people, what happens if different groups of people are observing you at the same time? For example, someone might not know how to behave if they were at a restaurant with their friends and they noticed that their parents were seated at the table next to them. This is phenomenon is called “context collapse.”
I have totally same experience when I was young. I was hang out with my friends behaving totally when I was at home. But suddenly I met my parents, which makes me super embarrassed. Now, I know it is called "context collapse".