A person who wanders around with no home is commonly referred to as a nomad or a vagabond.
A person who walks aimlessly can be referred to as a wanderer or a stroller.
A Nommad
Vagabond A waif also a hobo
Friends with benefits.
a naturist
A self-centered person or egocentric individual is someone who thinks the world revolves around them.
Someone who roams around without a fixed destination is often called a wanderer or a drifter.
they're oblivious to what's going on around them
they try to avoid you or call you mean names that they think would irritate you
if you have a phone call someone you know and trust, then ask them to try to find you and you will have to tell them what it looks like around you... but if you don't have a phone call out, if someone comes, tell them to get the police
If you call someone, you are the "caller".