Top Definition
an irish word meaning to have a large penis.
OMG he is so kleffner when he took his pants off!
by Lights out March 24, 2005
1 more definition
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
by sinthetic_god2002 March 28, 2005

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