What is moose knuckles?

A moose knuckle is a slang term for the outline of a woman's labia majora visible through tight clothing, particularly pants or leggings. It's considered the female equivalent of a "camel toe," although the terms aren't perfectly synonymous. The visibility is generally caused by tight, thin, or ill-fitting material pressing against the groin. While some might find it embarrassing, others might not be bothered by it. There's no inherent right or wrong regarding whether someone chooses to be concerned about a "moose%20knuckle" or not.