If you are aware that your neighbor living next door is into drug dealing and he come seek your advice how to buy Bitcoin, will you teach him?
What comes straight to mind is embezzling the ill-gotten money, but is this even safe? My other neighbor knows I am into Bitcoin and he learned from me, I guess that's how this other neighbor knew, I told him to go meet the next neighbor but he said he is not ready to teach.
What will you do if something like this is happening around you? Why would a drug dealer want to learn Bitcoin if not for a safer haven for running the business?
My mind isn't settled as I keep thinking different things, what is on your mind readers?
I wouldn't explain/teach nothing if you are 100% sure that your neighbor is a drug dealer. It's not a nice situation because 1) it looks like he already knows you know about bitcoin 2) you don't have the best neighbor. I would simply say that you lost interest in bitcoin time ago and you don't have it/use it anymore. But in the first place why would you even tell your neighbor about you and bitcoin? I would never do something like that, you never know who people actually are.
I was also wondering the same thing. How did his other neighbor knew about his knowledge about bitcoin? I understand if it is a close friend or family and OP just mentioned it a few times. Also, you should talk to the other neighbor who might have mentioned to your possibly drug dealer neighbor your knowledge about bitcoin. It is not fine that they are just spreading that information without your knowledge and consent.