$ perl 'no more Perl for me, unless less than 40 lines'
Can't open perl script "no more Perl for me, unless less than 40 lines
+": No such file or directory

$ perl -w
`no more Perl for me, unless less than 40 lines`
^D
Can't exec "no": Permission denied at - line 2.

$ perl -e "`no more Perl for me, unless less than 40 lines`"
-bash: no: command not found

$ which no
which: no no in (/usr/local/bin:/usr/bin:/bin:~/bin:/opt/bin)
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;-)