What is get it on?

Get it on is a colloquial phrase that typically refers to engaging in sexual activity. It originated in the 1960s and has since become a common expression in modern culture. It can also refer to starting or taking action on something, such as pursuing a goal or project. The exact meaning can vary depending on the context and the individuals using the phrase. It is important to note that engaging in sexual activity should always be consensual and safe for all parties involved.