SMOrc is an emote from the game streaming platform twitch. The design of the emote comes from an orc in the game space marine. It was originally used when someone was "going face"in hearthstone. Now it is just used to be generally obnoxious, usually accompanying something in all caps. It's most common use is in in the format BLANK or SMORC. Inwhich the chat demands that the streamer do something or they will otherwise riot with the SMOrc emote. SMOrc can also be used as a mild insult toward a person, meaning they are obnoxious, annoying, or mean.
QUIT PLAYING or SMORC.
Person 1: Why do you think this girl didn't like me?
Person 2: You're a fucking SMOrc.
Person 1: Why do you think this girl didn't like me?
Person 2: You're a fucking SMOrc.
by Lawless league June 16, 2016