old school twitch language used by a streamer called Mercader who mainly played World of Warcraft
it was often used when the daily stream ended
Mercader: thks for watching blah blah....merc out
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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.
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