An insult used by traders and the investment community for whenever someone egregiously short-sells a stock/commodity/cryptocurrency to the point of insolvency.
"Hey did you see that huge 3000 BTC short at $12,500 get liquidated at $15,000?"
"Yea bro, what a Melvin, everybody knows that all bears die."
A social outcast who needs to always be right with a more than considerable chance of being a pedophile.
Don't trust Terry, he's been giving Melvin vibes recently, I'd check his internet history.
What you call someone that can't think for themselves and only cares about his own self. They often hit people for their own amusement and hurt other people, and apparently it's okay to do so if they're a Melvin. They're a bitch most of the time and whenever you stumble upon them you get the urge to beat the shit out of them, but it really isn't their fault since it's their personality to be a Melvin. They sound like a drunk cow trying to talk.
You're such a melvin
fuck you melvin, go die