#!/usr/bin/env perl
use strict;

SOME_LOOP:
for my $outer (1..2) {
  print "outer: before callback with $outer\n";
  call_my_callback( sub { next SOME_LOOP } ); # you say this should advance "$outer";
  print "outer: after callback with $outer\n";
}

sub call_my_callback {
  SOME_LOOP:
  for my $inner (1..2) {
    print "inner: before callback with $inner\n";
    $_[0]->(); # "neeeexxxt!"
    print "inner: after callback with $inner\n";
  }
}