Internet slang for 'me right now'.
Camille: Woah, that girl looks like she's 16 months pregnant! TheMagicJesus after several boxes of fruit: mrn.
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A shorter way of calling someone a moron.
Omg, u mrn!
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masturbating right now
dude 1: hey dude sup? dude 2: stfu i'm mrn! dude 1: sry
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