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a 1337 person who makes even a half-decent person look like a total idiot. This person is so 1337 they make your mom cry. Not a hacker, just a keyboard wizard.
He turned my 40-level character into a pile of dirt with one spell.
She flexed her 1337 skills so hard, my DMs exploded.
He made my friend look like a n00b in front of 1000 people.