Okay, I want to laugh every time I see it (and since I have laryngitis at the moment, it's not a comfortable thing!), so I have to mention it. When I enter the main discussion forums page and it's there, I only see part of it:
How many Rangers of the North
So of course the mind, being old and creaky, immediately completes it with:
...does it take to screw in a light bulb?
Not the real full topic title, of course, but I laugh at weird things, I guess.
