"Futuristic money on the internet that doesn't need banks and increases in value instead of decreasing in value like most money."
Only needed one sentence
😂 Lolz, I doubt any kid you tell this will even understand what you talking about, they did just be staring at you and wondering in their little mind" what's wrong with him?"" what is he saying? ".
And to cap it up, saying bitcoin only increases in value is already a lie.
Lets just face the fact here, even op himself or herself can't explain bitcoin to the perfect understanding of a second grader in just four sentences, and besides, like Mia said, I also see no reason why I should bug my mind trying to explain bitcoin in a way a second grader would understand.
And to sum it up, an adult is not a second grader, and when an adult tells you to explain bitcoin to him or her in a way you would explain it to a second grader, that adult is just being idiomatic, the adult simple meant that bitcoin be explained to him or her in a simple way that would be easy to understand.