I was trembling so hard, I thought I would stutter when I spoke.

我那时抖得很厉害，我觉得说话时都会结结巴巴。

《柯林斯英汉双解大词典》

When someone asks me what business I am in, I become embarrassed. I stutter and stammer. My face feels hot.

当有人问我从事什么职业时，我感到很尴尬，脸发烫，结结巴巴地难以启齿。

youdao

Still, quite a creative nickname seeing as I - I - I - I have a stutter...

不得不说这外号真挺有创意的，因为我—我—我—我有结巴。

youdao