I'd write:
man perl
man perldoc
perldoc -f <functioname>
http://www.perlmonks.com
http://www.perl.org
http://www.cpan.org
"Be consistant. Be nice." -- Larry Wall
"Write for clarity first; let correctness follow naturally from clear
+design and good testing. Make it right; then make it fast, if necessa
+ry."
-- Me
That's what I'd put on a Perl mug: some of the important things (IMHO) to know as a perl programmer. I'd spiral the text around the surface of the mug, in nice pretty fonts and colours. That's just what I'd do, though. I don't really like regexp syntax, or coffee for that matter, so maybe I'm the wrong one to ask.
--
Ytrew Q. Uiop