Also know as a PFD. It's not a date, it's a dinner given out to a soon to be sexual partner just before getting it in. Usually given to women of the slutty disposition, the worth of Pre Fuck Dinners are proportional to how one values the person one will dine with, or even just their genitalia.
Jon: *brings out iPhone and shows Alex picture of super hot chick* I'm going on a date with Sarah tonight.
Alex: This is no date! That chick is fucking hot! Best not get her a Happy Meal on this Pre Fuck Dinner, otherwise you'll never bone her.
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?"