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2.
Someone who act's emo just to fit in with a new crowd of friends when she needs attention.
Wow, that new girl is def. posermo, she doesn't even paint her nails all black.
by Longsack June 18, 2007
 
1.
Being emo for the sake of being emo.
dude 1: Like that Taking Back Sunday song, "and you could slit my throat, and with my one last dying breath, I'd apologize for bleeding on your shirt."
dude 2: That's emo in a ridiculous sense, nobody believes that shit. It's posermo.
by profe January 04, 2008
 
3.
Any person who impersonates a real life Emo in the way they dress, the music they listen to, or the people they hang out with, yet are not willing to go the extra 3 inches.
John - "Tori is such a Posermo, she doesn't even cut!"
by James Martinen September 05, 2006