By all means send me an example of a comedian with a strong stutter. I don't really understand your finishing question, what am I comfortable saying? Anything a normal person would. Or did you mean what can I say fluently? Barely a word without a significant block. That's the problem with timing. As you said yourself its about delivering the punchline before they know what it is. But I can lay the foundation however I want, then we get to the "and then he w-w-w-w-, he www-w-alks int-in-into a b-b-b-b..." they get the joke, he wants into a bar. Theyve pieced it together themselves 5 minutes ago and there's humour left.