Try to show amaze them first... buy a cellphone load then tell them what you've used to pay... if they ask how you did that, explain how you got the bitcoin, tell something about the faucets, and that they are now left behind as they don't know bitcoin...
lol, if you ever buy a cell phone through Bitcoin faucets, I feel bad for you because you've probably wasted a year of your life with something you could've afforded easily with a job. Bitcoin isn't magic free money... It's amazing how many times you have to explain this to people, and I explain that when I'm talking about Bitcoin with people who don't know how it works.
Honestly there are a lot of people who are concerned about me paying for my bitcoins, because it's nothing that you can have that's tangible... When in all reality, it's no more tangible than the money they have in their checking accounts and they can monitor them on their bank statements.
Lol yeah bad explanation could make people get misleading, they could judge bitcoin bad if you tell and show faucet in their first impression . why? It looks bitcoiner = beggars that collecting a cents and absolutely wasted the time.
Try to make them impressed by other way , like tell them bitcoin is best thing to trade than fiat trade forex , bitcoin market opened 7 days a week .
Bitcoin is the best option to invest your money in long or short term because of it's fluctuations etc or something good that make bitcoin image awesome.