David Frum may seem like a stick in the mud, but he knows comedy.

So when his son told him about a great joke he heard at a comedy club recently, Frum didn’t hesitate to pass it along to his Twitter followers.

Because when you discover gold like this, you don’t keep it to yourself:

But seriously, folks!

Surprise! David Frum is the punchline. And the joke.

Hope the waitress got a good tip, at least.