“I twisted the dilly-doo until the thingy lined up with the whosie-whatsit and wouldn’t ya know it. The dingus got all gashnitzed and gashnizzled and the jobby-joo went wizz-bang out the back. Please forgive me if I’m getting too technical for you. It’s just that I’ve been workin’ in the doojigger biz since I was knee-high to a whatchamacallit and I rarely interact with you civilians.”
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?"