Pious Monks,

I've heard about funny attribute people's perception.
Look at this:
I tnhik you know what I am wintirg to you. But I must rbemeer to keep fsirt and last lteerts on the plcae and do not tucoh sorht wdors.
It's nice, istn't?
So, I try to write function to do it:

sub perception() {
    my @result;
    my @words = split / /, shift @_;

    foreach my $word (@words) {

        if ( length $word < 5 ) {
            push @result, $word;
            next;
        }

        my @toRandomize = split //, $word;
        my $letters = ( ( scalar @toRandomize ) - 1 );
        $letters-- if $word =~ /\W$/;

        for ( my $i = 1 ; $i < $letters ; $i++ ) {
            my $rnd = ( 1 + ( int rand( $letters - 2 ) ) );
            my $temp = $toRandomize[$i];
            $toRandomize[$i]   = $toRandomize[$rnd];
            $toRandomize[$rnd] = $temp;
        }
        push @result, join( '', @toRandomize );
    }
    return join ' ', @result;
}
[download]

What are you think about this?
How can I do it better?
And, how to work with words like "your's", "you're" etc.? - " ' " should stay on the place. $letters-- if $word =~ /\W$/;

 if ( $word =~ /\W+/) {
                $letters = (index $word, $&)-1;
        }

[download]

Stay in peace and wisdom, monks.
Uksza

P.S.
Is my code styl good? Not to much "talkative"?