Top Definition
MLJ
Major League Jack. Usually used to describe something indescribable.
"What can i say, i'm MLJ."

"Did you see that guy he's clothes are MLJ"
"OMG your an MLJ."
by Matrick May 13, 2013
1 more definition
mlj
under aged person (younger than 18)
- "Wow look at that girl!"
- "Are you crazy? She's mlj!"
by @oko June 24, 2009

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