Let Speak

a phrase commonly used which means to let out or disclose something. sometimes for information that one would rather not say or does not want to disclose.
to ask someone "whats wrong" in attempt to get them to tell you.

sometimes mistaken for "let's speak" which is entirely different.

e.g. 1-
girl: im not in a good mood at the moment,
guy: let speak!
girl: well today i was.........

e.g. 2-
i feel so much better that i 'let speak' today........