Hi there
What's the most simple way to describe what bitcoin is for people?
Will be cool to read in the comments some new creative ways to do that!

I will tell them, that bitcoin is a means to make payments that are almost the same as the fiat currency that we use in our daily lives. But if they are aroused and try to ask again, then I will explain it in more detail, this certainly must be done so that they are not mistaken in interpreting the meaning and function of bitcoin.