opa イディオム

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bust open a can of whoopass

to prepare to beat someone up/get really angry after they've done something appalling: (Usually meant as a joke between friends.)"Yo g, if you don't stop bugging me, I'm gonna bust open a can of whoopass on you!"

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whoopass

see bust open a can of whoopass

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A leopard cannot change its spots.

It is not possible for a bad or unpleasant person to become good or pleasant.

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Leopard can't change its spots

This idiom means that people cannot change basic aspects of their character, especially negative ones. ("A leopard doesn't change its spots" is also used.)

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A Leopard Can't Change His Spots

You cannot change who you are.

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The leopard cannot change its spots.

A person's character, especially bad nature, will always remain the same.

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leopard cannot change its spots, a

leopard cannot change its spots, a
Also, the tiger cannot change its stripes. One can't change one's essential nature. For example, He's a conservative, no matter what he says; the leopard cannot change its spots. These metaphoric expressions both originated in an ancient Greek proverb that appears in the Bible (Jeremiah 13:23): “Can the Ethiopian change his skin, or the leopard his spots?” It was first recorded in English in 1546.