In one scene of the novel Dune by Frank Herbert, Paul engages in a
fight to the death using daggers (crysknives) with a Freman boy named Jamis.
In the end, Paul was victorious and the tribe leader, Stilgar, asked him what
name he would like the tribe to call him. In answer, Paul asked "How do you
call among you the little mouse, the mouse that jumps?" By this name, he was
known thereafter. What was his new name?
Wikipedia entry for Dune (novel)
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IMDB entry for the 1984 David Lynch movie
IMDB entry for the 200 Sci-Fi channel mini-series
IMDB entry for the 2003 Sci-Fi channel mini-series "Children of Dune"