Source : Free On-Line Dictionary of Computing

japh
     
         A {Perl} program which prints "Just another Perl
        hacker" using extremely obfuscated methods, typically ones
        based on obscure behaviours of sometimes rarely-used functions,
        in the spirit of the {Obfuscated C Contest}.
     
        The obfuscation can result from the code being total
        gibberish, e.g.:
     
         $_="krJhruaesrltre c a cnp,ohet";$_.=$1,print$2while s/(..)(.)//;
     
        or from having "Just another Perl hacker" embedded in opaque
        code:
     
         $_='987;s/^(\d+)/$1-1/e;$1?eval:print"Just another Perl hacker,"';eval
     
        or from looking like it does something simple and completely
        unrelated to printing "Just another Perl hacker":
     
         $_ = "wftedskaebjgdpjgidbsmnjgc";
         tr/a-z/oh, turtleneck Phrase Jar!/; print;
     
        {Examples (http://www.perl.com/CPAN/misc/japh)}.
     
        (1997-09-14)