The best way to introduce bitcoin to a newbie is to setup a wallet on their phone and send them some btc over a meal. You cannot convince anyone to use bitcoin without them having some bitcoin to play around with.
i don't know, this will tech away the notion about how bitcoin work and what it really is, in this way you are just giving away money, they ask for more in the end without care too much about how bitcoin really work, you will distract them more i think...