Short for RedditMoment-tard. A person that is part of the Reddit Moment hivemind (which is the complete opposite of the reddit hivemind) that bullies people to suicide because they like Minecraft and hate Fortnite and Tiktok. They don't know the difference between constructive criticism and circlejerking.
Sane person: I dont really like fortnite, I'm not really into shooters so Fortnite isn't really appealing to me.
RMtard: LOL REDDIT MOMENT BIG CHUNGUS KEANU REEVES WHOLESOME 100 MINECRAFT GOOD FORTNITE BAD
Sane person: STFU RMtard.