While the exact origin is unclear, here are a few possible explanations:
1. Physical Bending: The phrase might have originated from the physical act of bending someone over, either as a form of punishment or dominance. This could relate to bending someone over in a physical fight or during a sexual encounter.
2. Sexual Connotation: The phrase might be related to the slang term "bent," which has a sexual connotation. This could relate to homosexuality, but it's important to note that this interpretation is outdated and potentially offensive.
3. Bending the Rules: Another possibility is that the phrase originated from the idea of "bending the rules" or "breaking the law." This could relate to someone who is not following social norms or behaving in an unacceptable way.
4. Military Slang: Some argue that the phrase originated as military slang, particularly during World War II. It's possible that soldiers used this phrase as a way to express frustration or anger.
5. General Rudeness: Regardless of the origin, the phrase has evolved into a general expression of rudeness and disrespect. It's used to dismiss someone or express anger and annoyance.
It's important to note that the origin of the phrase is not fully known, and different theories exist. It's considered an offensive expression, and it's best to avoid using it in most situations.