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?
op said his neighbor is a drug dealer expressing interest in investing in bitcoins since he is a drug dealer you have to handle your neighbor very carefully. You can tell him that you are not doing it anymore or you can walk away from him saying that Bitcoin is bad. Or if he doesn't understand that, you can tell him to search YouTube and find out more about Bitcoin. Then if you feel like investing in Bitcoin then you can. Because if that drug dealer is somehow caught by the police then he can say that I am not dealing in drugs now I am involved in bitcoin now since bitcoin is not legal in our country you may face problems so my personal opinion is better not to teach him bitcoin.