The following code prints a 0, a 1, a 2, and an empty line. But which is which? 
use 5.020;
sub one { 1 }
sub two { 2 }

say one&two     ;
say &one&two    ;
say &one&&&two  ;
say &&&one&&&two;

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It is not that difficult to figure out, it was a accidental discovery while messing around with syntax highlighting. For the friends of JAPH, here's one with five consecutive ampersands:

use 5.020;
sub s { say };
$_ = 'Jusst another Perl hacker';
s&s&&&&&s

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In reply to A twisty little maze of ampersands, all different by haj

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