I’ll let you in on a secret. The creators knew this would drive us crazy. They fed the mystery on purpose. It’s a running gag. Like Sheldon’s mom asking him to come home or Raj’s selective mutism. It’s the bit.
So what is Penny’s last name? It’s the inevitable void in a pop culture black hole. It’s the ghost at the feast. It’s the thing we’ll argue about until we’re old and gray, sitting in our Bazinga-embroidered sweaters.
But if you forced me to pick? I’d say it’s Penny Teller. Not because it’s true. But because it sounds like a magician’s assistant. And she did make a whole lot of geeky problems disappear. One “Sweetie” at a time.
So there you have it. Penny. Just Penny. And maybe that’s the most perfect name of all. Cheers to the girl with no last name and a heart the size of a comet. Now, who’s ready for a refill?