The red string bracelet is worn on the left wrist by people with anorexia, specifically people who participate in the Pro-Ana movement. They do this to keep reminding themselves that they're doing good when they don't eat and to try to find other anorexics in real life.
Bulimics wear a Blue string bracelet on their right wrist for the same reasons
Today I started wearing my red bracelet to keep myself motivated.
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?"