My gf accidentally embarrassing me. I cannot talk on command

My gf accidentally embarrassing me. I cannot talk on command It's rare when I do but I think she just forgot that I am not normal sometimes :( I was with her family and everyone was talking about babies and who has a baby. We were all joking around, then she asked me to say that I'm her baby. Of course, I got red and pretended to go dumb. "What do you mean?". She got a little mad because she thought I didn't want to say that she is my baby. I just had a feeling it wasn't gonna come out and I didn't bother trying since everything was going smooth. This was outside, they came to pick up money I owed them. It was easy going convo that lasted about 10 minutes. :( I wish things can just come out with no problem. Any way, do you guys have a problem talking when they ask you to talk? Like when someone asks my name, I always have trouble but I know that's normal for stutterers. I can't think of any examples..