"Andy's Coming" is a phrase from Toy Story, when one toy shouts "Andy's Coming!" they would all fall to the ground, so "Andy" does not know they are real.
This has became a internet meme/competition where in many places such as school one person shouts "Andy's Coming" and everyone falls to the ground.
A celebratory phrase used following one, or a series of, positive, though generally insignificant event(s).
Its origin can be attributed to Milhouse, a character of television show The Simpsons, who coined the phrase in jubilation after realising the success of his flood pants to keep his cuffs bone dry.
"I left work 10 minutes early today, and I found $2 in the passenger seat of my car! Everything's coming up Milhouse!"
A term used to describe an FPS player (particularly COD) who uses a sniper rifle by aiming down the scope for more than one second. It is often frowned upon by plenty of people in the COD player base due to the more popular but not necessarily effective tactic of quick-scoping and because of how unstylish COD players seem to look at is as. This term is described to be unjust by other players because that is how the all FPS games intend for sniper rifles to be used.
Arrogant player: NOOB!! STOPHARD-SCOPING YOU FAGGOT!!
Player: Then what's the point of using a sniper rifle then?