A general feeling of uncleanliness, sometimes used to suggest that somebody has an STD. Usually remedied by a good douching on the part of girls or possibly an enema for guys.
From a mid-80s commercial for Massengill brand douche.
Girl: Mom, do you ever feel, you know, not-so-fresh?
Mom: Of course, that's why I douche.
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?"