Gosh I simply love role playing.  It's really exciting!
Do you know that changing of one's behaviour to assume a role of another is role playing?
Oh is that what it is?  What's a good example of role playing?
Oxford dictionary will answer your question. It says role playing is "the changing of one's behaviour to fulfill a social role"
Oh ok.  Is role playing something that has been around forever?
yes and have even lead to taking part in  games such as cops and robbers.
Oh I've heard a lot about role playing games, but never cops and robbers!
In the 20th century, it is pursued as a hobby