The upper-class name for the reverse shocker. Basically, the act of sticking two fingers in the "stink" and one in the "pink." Which fingers are optional. For an added bonus, stick the tainted digits in your/her mouth. Why? Because I said so, son!
Man: I have an idea!
Woman: OWWWW!!!! WTF!!!
Man: That's right, baby!! Taste that Milk Shockolate goodness!!!
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?"