A fork of Rural Dictionary
To kill or beat someone within an inch of their life. Also, to snuff or whipe someone/something out with one hit.
The kid with the pink skully got merced out. He merced-out my sour patch kids because I was giving him the crook eye.
old school twitch language used by a streamer called Mercader who mainly played World of Warcraftit was often used when the daily stream ended
Mercader: thks for watching blah blah....merc out