(greh-shum-ing) Verb: The Act of having any sort of sexual relation on or inside any school property.
Derived in 2011 by a Bakersfield, CA news story involving several brothers, with the last name of "Gresham" being expelled from KHSD for making whoopie on a school campus, with other girls.
Guy: Hey whats up babe?
Girl: Nothin, you wanna have some fun after 2nd period?
Guy: You thinkin what i'm thinkin?
Girl: Get ready to start greshaming babe
Guy: Oh Yeah.!!
(1) A legal feature of PSP systems that allow a person with a certain game to play with someone who does not own that game on local multiplayer between two PSP consoles.
(2) An illegal way to get free Playstation Network downloads on the PS3. All Playstation Network purchases are allowed to be downloaded five times in case of loss or accidental deletion. Gamesharing takes advantage of this by sharing your Playstation Network account name and password with up to four other people so that they can download games, add ons, or other content that you have paid for already at no cost to themselves, and vice-versa.
Tom: How did you get so many games? I know you're not that rich.
Bob: Oh, I do some gamesharing with some guys on the east coast.
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.