Some dude at the bus station wants to know what bitcoin is.
you don't have much time and he won't be able to take in to much information.
a simple look it up online won't do, because that's not interesting enough to read a lot of boring stuff online.
What are 2-3 short(!) key features of bitcoin, which i could tell him, so that he has a basic understanding what it is? And of course so he will be interested to learn more about it.
first of all does he understand what is digital currency because this is basic knowledge of bitcoin and if he understand i think with short words he will be understand about bitcoin because if he does not know anything about digital currency i think there will be difficult explain to him what is bitcoin only in short sentence also i considers bitcoin could not explain with only short explanation and if any person asking what is bitcoin in 2 or 3 words i guess this person basically not interested to bitcoin