A person who's an asshole and doesn't seem to get that you don't want to talk to them. Has a tendency of being very annoying. Also dresses very trashy and can be depressive.

A street person or person of the street. These people usually dwell in cars that aren't theirs, warehouses, squatting holes, gutters, garbage cans, boxes, parks, opium dens, public bathrooms (bus/train station, airport), bushes, soup kitchen's, etc.
They can often be seen swimming in yuppie's pools in the daytime while the sell-outs are at work and carrying a bottle shaped brown paper bag.

A streeter. One who is homeless, and has spent the majority of their life drifting and living on the street for survival.