What does confidence with a stutter look like?

What does confidence with a stutter look like? I’m learning to be confident even if I don’t feel like I am. I’m 18 with a stutter and yesterday at my work I needed to say a word I couldn’t say over the radio and got blocked on it. I finally got it out and just laugh as I said it and the chuckled after. I then still remained to talk on the radio when needed and still chatting with everyone at my job and they still treated me as anyone else. I feel like I showed a lot of confidence which is hard to do with a stutter. Is this what confidence looks like with a stutter? If not what does it look like?