To Libby (verb): to out someone's undercover role, as Lewis "Scooter" Libby (and others) did to CIA agent Valerie Plame.
Her: Yes, I'm sort of a secret agent.
Him: Well, if you keep telling people it's not much of a secret is it?
Her: Oh, you're right! I need to work on my stealth. Sorry.
Him: Don't apologize to me - I'm not the one who Libbyed you.
by My name is Cos August 06, 2007
A term given to college students, who couldn't "cut it" in their desired majors and switched to liberal arts (AKA: Libby's)
Bill: Hey dude, I haven't seen that blonde girl Brittney in the library recently, what's up with that? She was hot.

George: Yeah bro, she doesn't spend five hours a day in there anymore studying Microbiology because she couldn't handle it anymore, she's one of the Libby's now.
by Gingabreadman186 May 06, 2009
libby are normally really funny girls, with brown hair and freckles. they are very loud and are very clumsy. libbys are known to be goofy and extremely annoying. they are normally the inside girl who eats all the time and not an athletic healthy girl. they are normally close with people with the names like caitlin or leah
'Look how goofy Libby is'
by Michael flapjack April 02, 2015
being a slut and a 4 or more faced bitch
shes acting bare like libby
that libby is such a slut
by hackinganonymous March 06, 2015
Biggest flirt you will ever meet, flirts with your boyfriend and tries to steal other peoples boyfriends.
When Libby I around no boyfriend is safe
girl 1 : oh look there's Libby

* everyone scatters *
by Stevetheunicorn August 22, 2014
Another term for Ass to Mouth.
I pulled a libby on that fat chick from the club last night.
by BigDickRyan December 08, 2009
Crazy akward middle aged woman that loves to hastle young men...
libby: "Hey Darby! Hows your H.O.?
by Darby and Charlie February 13, 2009
Perpetual/ transcendent hottie.
Damn, I wish I could be a Libby.
by es. February 27, 2008

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