Joke

I shouldn't post jokes I made up with my six-year-old. But I'm tired, so...

Knock, knock

(Who's there?)

Doctor

(Doctor who?)

Hee hee!

From here. I like this show, even though the episodes vary wildly in quality. Science is Magic, dinosaurs can rampage across space ships, and  Charles Dickens meets alien ghost-zombies (that's when I got hooked). Hee hee indeed.