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15.
Noun: One who fails to recognize the credibility inherent in one's excuses for not hanging out.
Mat: I haven't been around because I work a lot and live an hour away from you. Not to mention, I dont have a car.

Jamie Leigh: Those are poor excuses. You are ugly and suck.

Mat: Dude, you're a lame-o.
by feralmat February 11, 2010
 
16.
the feeling you get when you find out that mystery google no longer exists
When Ellie typed in "what happened to mystery google" on google after failed attempts to go on the site she found out it was taken down and replaced with MysteryMissions.com she felt like that was totally Lame-o
by that's lame-o March 19, 2010
 
17.
a lame person?
manjinder is sucha lame-O!
by hardkaur February 11, 2004
 
18.
Lameo is a general term that describes anyone who is completely socially retarded, does not do drugs and spends their life chasing after women and fucking with safe mateys birds. They are rediculously keen and try extremely hard at everything, especially there appearance, this is what makes them lame. A dick noone but other dicks like or hang around, the type of person you avoid and run away from and silence phone calls from and do not reply to texts ... you know who you are you sad bastards. They are a wart on the anus of society and a drain on anyones social energy... they shoud be harshly ignored.
Phil you are a complete and utter lameo, go smoke some dro' or something you sad lame pathetic loser, go get some real friends.
by Benthebongman September 14, 2005