How is “here goes” used?

In Aladdin (2019), one line is: “One trick Ahead of disaster They're quick But I'm much faster Here goes!”

Which movie is “here goes” from?

The clip at the top of this page is from Aladdin (2019).

One trick Ahead of disaster They're quick But I'm much faster Here goes!

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used when you are telling people that you are just going to do sth exciting, dangerous, etc.

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used when you are telling people that you are just going to do sth exciting, dangerous, etc.

定義：Oxford Advanced Learner's Dictionary 第 9 版