What do you know for sure?

[Me55enger]

I know that you know that I'm not fond of asking...

To quote...

 

[DemonicVixen]

I know that you know what i know that he knows that she knows how they know who we know.

Yeah try that for size and even saying it really fast.

 

[Monocle Man]

I am sure that I exist. I'm not sure anyone else exists, though.

 

[D-Cypher]

That beef jerky is THE best snack of all time (just received 2 boxes of the stuff).

 

[Cargando]

I know nothing for sure. I am not even sure that I'm posting in this thread.