To blurt out something means to say something without thinking about the effect it will have and it's usually because you're nervous or you're excited.

脱口而出意味着在没有考虑某件事情会产生的影响的情况下，把某件事情说出来，通常是因为你很紧张或很兴奋。

And so I used to just, I should just write, don't say a word, don't say a word, just keep like writing at night, you just blurt out something else.

所以我曾经只是， 我应该只是写， 一个字不说，一个字不说， 就像晚上写作一样， 你只是脱口而出别的东西。