here goes

1. here one goes again . Someone is repeating the same action or speech, especially an undesirable one. For example, Here he goes again, criticizing all his colleagues , or The power's out—here we go again . [ Colloquial ; mid-1900s]

2. An expression or exclamation declaring one's resolution to do something, as in This hill is steeper than any I've skied before, but here goes! This usage is sometimes amplified to here goes nothing , meaning one is starting something that one doubts will succeed, as in I've never tried this before, but here goes nothing . [Early 1800s]