A phenomenon that occurs when your friend's boyfriend is shittier than a homeless man on Ex-Lax and therefore makes anything your own boyfriend does look like Jesus walking on water in comparison. Inadequate in general, but especially in the bedroom.
Examples of the Keith Effect:

Girl: Oh, honey, you got me a burning bag of dog shit for my birthday? You're so sweet, unlike that Keith guy!

Girl: Oh, honey, you remembered my name! God you're wonderful!

Girl: Oh, honey, I'm so glad you've only cheated on me fifteen times; I heard that Keith guy cheated on his girlfriend a hundred.
by alittlebirdvacuum July 6, 2011
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Keith Buckley is the vocalist and lyricist of the band Every Time I Die. Basically, he's a singer, screamer, lyricist, writer, social commentator, English teacher, miscreant, karaoke enthusiast, Maury disciple, sex symbol, and masochist.
If you aren't Keith Buckley, don't bother talking to me.
by Call me Shoulders March 7, 2012
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Keith David starred in a wide variety of movies, like the well known movie "They Live" Where stupid hipsters took the OBEY sign and put it on their faggy douchebag hats. Also very well known for his role as the arbiter in Halo 2 and 3,Keith David is like a slightly less famous Morgan Freeman.
Keith David is love, Keith David is life.
by Mr.tay April 29, 2016
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Refers to when absolutely off your tits on yokes
Ah man look at that bloke, he’s such a Keith buggy!
by Soap dog November 4, 2017
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The nicest person you'll ever meet. A complete and utter sweetheart, with a great sense of humour. He'll leave you in tears from his hilarious jokes, all that and he's smart too. A right genius, he can tell you anything about everything, but at the same time won't make you feel stupid. You can go to him with any problems, and he'll listen. He's extremely genuine and lovable, plus attractive. An all round cheering person, and possibly the best friend you'll ever have.
That guy's amazing.. he's such a Keith Kenny
by RamonaWindfall April 19, 2011
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a fat white guy tht thinks he can be black by rapping Lil Waynes lyrics infront of african american girls.
"keith coffinberger did you answer question number 14?"
"yeeeaahhhh ! i been done dat jont !"

ETHNICITY FAIL
by butterballs42 April 16, 2010
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