Caught red handed

"Caught red-handed" is an idiomatic phrase that means being discovered in the act of doing something wrong or illegal, usually with clear evidence and no chance of denying or escaping responsibility. The origin of this phrase stems from the literal act of catching someone with their hands stained or covered in blood, which serves as undeniable proof of guilt in committing a crime. Over time, it has expanded in meaning to include any situation where a person is caught in the midst of committing an offense, regardless of whether it involves literal blood or not.