kleffner 

an irish word meaning to have a large penis.

OMG he is so kleffner when he took his pants off!

kleffner by Lights out March 24, 2005

kleffner 

a faggy little red head also known as fire crotch. not a very large penis actually a very small penis.

kleffner is such a fag

kleffner by sinthetic_god2002 March 28, 2005

Keffner

Having no desire to speak to other humans so you carry around a pencil and piece of blank paper and make it look as if its important.

Jimmy: Hey Chuck, what are you doing?
Chuck: I have this really important paper to make copies of.
Jimmy: Ok see you later.
Chuck:(to himself) Yes. Another day of pulling a Keffner.

Keffner by daringstudent April 7, 2010