One of the most common horror stories is about bad smells. Some neighbors might cook really strong - smelling and unpleasant foods that permeate the whole floor. Also, there are those who have unruly pets that make a mess in the shared areas. And not to forget those neighbors who like to redecorate or do DIY projects at odd hours, like in the middle of the night, with all the hammering and drilling noises.
I once had a neighbor who was constantly smoking in the hallway. The smoke would seep into my apartment, and it smelled terrible. I'm allergic to cigarette smoke, so it was not only unpleasant but also a health hazard. I complained to the building management several times before they finally took action.
No, it is not ethical. Having sexual relations with a neighbor boy, regardless of sexual orientation, can be considered inappropriate due to power imbalances, lack of full consent especially if the boy is a minor, and potential harm to the community's social fabric.
I don't have a specific sex neighbor story to share. But generally, having good relationships with neighbors can be really positive. Neighbors can help each other out, like sharing tools or looking after each other's homes when one is away.
No, it is completely unethical. Hypnotizing someone without their full, informed consent for any such inappropriate purpose is a violation of their autonomy and privacy. It can also cause serious harm to the neighbor both psychologically and in terms of their relationship with you.