Here are some amusing anagrams of MapReduce: acme duper, peace drum, dare me cpu. Time for me to hack up Acme::Duper?
package Alpha;
sub foo { return 'alpha' };
package Bravo;
@ISA = qw(Alpha);
sub foo { return 'bravo' };
package Charlie;
@ISA = qw(Bravo);
sub foo { return 'charlie' };
Charlie->DUPER::foo; # returns alpha