I sure this breaks some rules of good programming practice, but it's still cool. And yes I'm planing on using it. 
#!/usr/local/bin/perl

use warnings;
use strict;
use Want;

sub lvalueMethod($) {
  my ($name)    = @_;
  my ($package) = caller;
  my ($fn)      = $package . "::" . $name;

  no strict 'refs';
  *{$fn} = sub  : lvalue {
    my $self = shift;
    local *call = sub { $self->{$name}->(@_); };
    if ( !want('LVALUE') && ref( $self->{$name} ) eq 'CODE' ) {
      goto &call;
    }
    $self->{$name};
  };
}

{
  package Foo;

  sub new { bless {}, shift; }
  main::lvalueMethod("bar");
}

my ($x) = Foo->new();
print "$x\n";
$x->bar = 5;
print $x->bar, "\n";
$x->bar = sub { print( @_, "\n" ); };
$x->bar("Hello World");

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In reply to defining methods on the fly by flogic

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