Please, explain the meaning of a phrase "my bad."?
Could you, please, explain what is an etymology of the phrase "My bad."? In which cases is it being used? And is it actually correct to say like this? Just as a slang? Also, give me some examples, please.

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Answer

It is a very casual way of saying "that was my fault". It is usually used jokingly as it is a somewhat light-hearted way of stating that you are at fault. It can also be used ironically.