I just dont ever tell formal jokes. First of all i find them too forced and second my stutter is so unpredictable i wouldn't dare try it. I usually tell funny stories because i can substitute words if needed. Im known as a guy who listens and then comes up with witty smart ass comments because i can pick and choose when or what i want to say based on how comfortable i am about speaking at that moment. My stutter definitely effects my expression of my sense of humor, mostly in a negative way because it holds me back.