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Keith is a common name for a male. A Keith is known to be a complete asshole, and manwhore. Keith's never know that what they have is the best their going to get, because they are always trying to get more. Males named Keith usually enjoy golfing, and swimming. Although they spend the majority of their time sleeping. Keith can also be a term for a male who is usually from Spain, goes to college in the U.S. and who thinks he is the hottest thing around, which he most deffinitly isn't. Keith can also be a term used for a male who is very immature, and doesn't know how to handle situations like an adult.
Girl # 1 "I can't beleive he came all this way to see me, and spent most of the day sleeping"
Girl # 2 "Yeah, He's such a Keith"

Manwhore Asshole Speedo Spain New Jersey Golf College
by thanksforflaking December 08, 2009
A man who gets drunk and tries to snog big breasted employees at the christmas party and only has one testicle.
I cant belive he was such a "keith" last night
by shazzer79 February 09, 2009
A knife-weilding body odour sufferer. A fan of the cancan dance, and also knwon for resemblances to famous fictional characters.
Man, you stick! Are you called Keith?
To say a very lame joke. Can have different forms such as an adjective and a noun as seen in the examples.

Typically, when someone says a very lame joke, the people around accuse the person saying the joke by doing a hand gesture, consisting of a closed hand with the ring finger, middle finger and index finger open and placed over your forehead.

There is a myth claiming that when a person does a Keith (very lame) joke, he or she are killing a Kenyan child.

When the joke is epically lame, or the person doing the lame joke tries to justify themselves but instead make it lamer, they do an epic Keith. The hand gesture is done over the mouth instead of the forehead, and 50 Kenyan children are killed instead of 1.

Nevertheless, this concept brightens the world and human lives. No one typically laughs at a lame joke, but when people do the Keith hand gesture, then the people laugh at the person doing the lame joke.
(Adjective): That was totally a Keith joke.

(Noun): He just did an epic Keith! Hahaha
by TimmyRoger July 23, 2009
Dontchu see we're talking. Quit being a "Keith".
by jrsn1per@gmail.com April 26, 2009
One who likes someone but is too much of a pussy to tell them how they feel.
Jim: Hey Mike you shacked up with Jessica yet?
Mike: No, not yet, I dont think the time is right.
Jim: Stop being such a fucking Keith and got talk to her.
by cocksoccer September 20, 2008
Verb. 1. To scam, trick, rip off or otherwise dupe.

Noun. 2. An extremely sketchy or shady individual. 3. A piece of shit.
1a. We should keith that dumb ass over there with that $20 dollar bill hanging out of his pocket.

1b. I got keithed last night when I walked to my car and found it on blocks.

1c. After I bought that shitty magazine subscription from that pushy door-to-door salesman, I felt like I got keithed.

2. If you keep staring at girls with that shady grin when you are trying to hit on them you are going to turn into a keith.

3. I went to the can and dropped a huge keith.
by CST April 04, 2007