A phrased mainly associated with the arts of picking up women or "bitches" by figuratively "throwing bones" to them, which is to flirt, mack or game on them with the intention of getting a woman or bitch to eat the bones which is to fall for your game ultimately leading to seduction.
"I was throwingbones at this girl last night, and she ended up going home with me"
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.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"