Stuttering isn't the same thing as not being able to form a coherent sentence at all. We know exactly what we want to say and how to pronounce it, but the words and syllables don't come out fluently because of involuntary disturbances in the flow of speech. I mean I'm sure the OP was supposed to be a self-deprecating joke, but this is actually quite a prevalent myth about stuttering that gets on my nerves.