I don’t think it is that difficult to explain bitcoin to newbie….
But it doesn’t mean that you have to explain them on the basis of penny/dollar concept…because actually dollar is a stable currency but bitcoin is not…..you have to keep that in mind ….
Easiest way of explaining would be by having them known about your investments and returns…..
You should also tell them about the risk factors…
They should be also be guided about buying bitcoin in fractions (satoshis)….
And it should never be forget to tell them that bitcoin is not one night rich thing….