What does a click mean in slang?

In slang, click has many flexible meanings that go beyond the literal sound or mouse action. The most common slang meaning is when two people click, meaning they instantly get along, have chemistry, share the same sense of humor, and feel comfortable together, similar to saying they vibe or hit it off. Another slang use is to describe the moment something suddenly makes sense, as in It finally clicked, meaning you understood. In photography and social media slang, a click means a good photo, like Nice click. In drug culture slang, clicking can mean feeling high or euphoric and light. In urban slang, to click can mean to become successful or to catch on, as in The plan finally clicked. In some regions, click is slang for a tight-knit group of friends, similar to clique, as in He is part of my click. In military slang, click or klick means kilometer. In British slang, click can also refer to a camera shutter sound meaning a photo was taken. In gaming, to click can mean to perform well or to execute perfectly. Overall, slang uses of click revolve around connection, understanding, capturing a moment, or measuring distance.