Newbie: Hi! I'm in computer science at the local university. My grandfather told me that I should learn Tcl and Tk because it'll allow me to do all kinds of cool stuff. But when I mention that to my friends at school, they all laugh at me and tell me that Tcl is totally obsolete and for losers. Now I'm worried! Is Tcl dying out?
Jeff sighs, and picks up a desk calendar from the shelf behind him. He looks down, quietly says "right on time", and puts a big check mark next to a handwritten note on the current day. He then makes another entry on the calendar three months later.
That would be funnier if s/Tcl( and Tk)?/Perl/g; weren't also true.