Okay. It seems people don't get it. So...
Technically to prove me wrong, you would have to answer "You can't type this sentence." But then since I typed that. I can type it. Thus, a paradox.
But, if you answer anything otherwise: "hot dog", "car", or even the one that makes sense "I can type that sentence"... You did not type that sentence, thus, meaning you cannot type that sentence.