In video games: Manually saving your game over and over again (usually before important decisions/boss battles, etc.) to make sure that if you screw up later on, you can always just return to your most recent saved game.
Used in games that allow players to save whenever they want, thus making the game substantially easier because there's no real penalty for messing up, and it lets the player know what to expect ahead.
If I wasn't save scumming so much, I would've had to restart this mission a shitton of times.
Navy slang for a person engulfed in flames, usually running around screaming; so termed because burning people fit into the category of class-A/class-Alpha fires (those involving solid, organic combustibles and which leave ashes).
"If you watch that newsfilm of the Hindenburg crash, you can see a bunch of screaming alphas come running out of the wreckage."
Playing a training game against another clan/team in a computer game.
Me: Hey progamer that I can bother about anything because of steam, wanna play a game?
Pro: fu noob Im scrimming
Me: Oh whats that?
pro: stop msgs its annoying Me: Oh really? how annoying?