is not a word, despite the belief of John Mathews. Yes, hitherto is a word, as is fore. But when combined, the resulting preposition doesn't make sense.
John: Bret, come hithertofor!
Bret: God John, I hate when you try to make hithertofor sound like a real eloquent-sounding word even though it doesn't mean anything.
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.