used in IRC ( Internet Relay Chat (IRC))to spam a message into all open chat windows that you are in.

you would type something like this.

/amsg This is spam!

Then that would show up in all irc channels you are in as if you typed it in that window.
by Saint-Muffy June 19, 2006
Get a amsg mug for your sister-in-law Riley.
Acronym meaning Ad Majorem Sathanas Gloriam, the title of Gorgoroth's album from 2006.

The title is Latin for "For The Greater Glory Of Satan". It is a parody of Ad maiorem Dei gloriam ("for the greater glory of God"), the motto of the Society of Jesus, conceived by Infernus after having read an article on the counter-reformation and the Jesuits.

AMSG is used as a salute.
-Hail satan!
by mamolics May 02, 2008
Get a AMSG mug for your guy Sarah.