Arrggh! Someone please bail me out of my newbie misery.

#!/usr/bin/perl -w

use strict;
my $key = 'JUMP';

if ($key eq 'ID' or 'TITLE' or 'GENE' or 'CYTOBAND' or 'LOCUSLINK' or 
+'CHROMOSOME' or 'SCOUNT') {
    print "I don't know why this is printing.\n";
}
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Why is the above conditional coming out as true?????????

$PM = "Perl Monk's";
$MCF = "Most Clueless Friar";
$nysus = $PM . $MCF;