Alright, alright. I f***ed up. I know.
So... here's a reasonable one that some of you might like.
Behind the Green Glass Door
Rules: If you know how this works, or if you know the answer... DO NOT give it away to the people who don't get it. Some people have heard it before (much to my surprise, because it's a very obscure riddle).
Objective: I am going to give you a sentence, telling you something that is allowed to be behind the green glass door, and I'm also going to tell you something that is NOT allowed to be behind the green glass door. Your mission is to figure out your own sentence, and for those of you who know the answer... we'll tell you if you're right or not. We keep going until EVERYONE understands it.
I'll start.
You can't have a road, but you can certainly have a street.
Now, if you already know how this works... please don't screw it up for everyone else. Let's keep it goin'.