Short version of the phrase: “Ima make you mine”
Used to subtly flirt, when someone is shy they use this abbreviation to shoot their shot with more confidence- it can be used easier in a conversation especially if you want to subtly validate you want that person romantically. It’s also easy enough to play off if you get rejected (like I did)*.
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?"