Bitcoins,
For general people: Bitcoin is digital dollar, known for its anonymity that does not have any involvement of government
OR: Bitcoin is virtual money, which u can give/revieve to/from anyone around the globe without the taxes
For Coders/Techies: Bitcoin is a decentralized P2P online cash system that relies on cryptographic principles to work.
To grandma: Bitcoin is money that you can send like email
(This cant be explained better than this ) For Merchant: Bitcoin is digital dollar than let u do transactions without any tax and chargebacks
For people of few words:Bitcoin is anonymous digital money with no tax and banks
For traders/investers :Bitcoin is like virtual gold with a lot of volatility and no tax
For online gamblers: Bitcoin is a virtual currency that lets u play on casinos even with cents!
For people who do a lot of online money transfers: Bitcoin is saving tax on every online transfer
For visionary: Bitcoin is the face of future of digital currency
For economist:Bitcoin is a new form of money that is digital, safe, transparent with no taxes
For idiots: Bitcoin is an example of vitual version of decentralized dollar