For someone who lives on the streets, they don't need a home to live in. They don't need a roof over their head. Their home is the streets.
"I met a guy that refuses to stay in a shelter, and he doesn't mind living on the streets. He's staying at a campsite down the road. He's not really homeless, he's houseless."
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.