humans perhaps evolved a sense of humour as a result of the advantage offered by sophisticated language.

I personally believe that not all there is about humans is result of evolution, and humour per se isn't. The capacity to understand sophisticated jokes however is related to intellect, which is bound to evolution. Intellect and language are tied, hence the link of abilities, but humour is a human gift sui generis. Humour makes life easier, so it does for language learning. How is your sense of humour? ;-)

Do the best of you still find anything about Perl funny?

I'm a long time perl programmer, but clearly not one of the best - and I still find perl funny, as do some of the best. For instance, constructs like

my $maxint = ~@~ ;
[download]

: -)

Ah, and then... witty Japhs ++

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}