So... looking at some examples of japh...
https://www.perlmonks.org/index.pl?node=japh&go_button=Search

I see a variety of possibilities (needing an echo if you expect them
to work as scripts), ranging from

   |.'rekcah j rehtona tsuj'

to

echo 21$,a.{~32+%.(".;._2]0 :0)%*/3 3 1129 3203
 122022 _1867296  229791  _475896  1991454
_368541   962031 1057515 _8747088  6360510
 362592    _3621 _330171  _876432   723030
 294606   675093 _946299 10136460 _8905029
_452457   311941  113195  _958589   907483
)

to

a=:' acehjknorstu'
b=:(1,0 3 3,,:~0 1 1)#&,4#,:3 2 1
c=:4 12 14 5 16 17 10 19 9 15 0 13 18 6 7 11 20 2 3 8 1
echo c/:~b#a

With some further variations on this theme being plausible... (The
ascii art approach, in particular, seems like it might be fun.)

Take care,

-- 
Raul

On Mon, Aug 31, 2020 at 3:35 AM Hauke Rehr <[email protected]> wrote:
>
> Hello all,
>
> some time ago I wrote three lines in reference to
> the Perlish JAPH meme; I’ve been unsatisfied with
> the approach taken so I never made it part of my
> email signature.
>
> Here it is:
>
>     'e t' =: '0$0';' 5@>? ,9:?30= 5 3,.60='
>     v =: (+/ - *:@{:) ,".@(']&'&,)@,&e;._1 t
>     <@(v&+&.(a.&i.));._1 t
>
> Does any of you have a jajh of your own
> or interest in making up one?
> I’d be glad to see – and learn from – different
> approaches to this fun task.
>
> --
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