My current favorite questions involve asking people what their favorite Javascript library is, then asking detailed questions about how it works. Even pulling

My current favorite questions involve asking people what their favorite Javascript library is, then asking detailed questions about how it works. Even pulling up common functions from the library and ask what is going on. Better questions involve things like variable scoping, modules, arguments, event bubbling, prototypes, etc. Now, where I get stuck: Regular Expressions. I just don't think I will ever get comfortable with that.