Lykyk full form: IYKYK stands for “If You Know

IYKYK stands for “If You Know, You Know”—a popular acronym used on social media to signal a shared understanding or inside knowledge. It’s often associated with posts, jokes, or references that only certain people will fully grasp. IYKYK definition: 1. written abbreviation for if you know you know: used, for example on social media and in text…. Learn more. Q: What does Lykyk mean text? A: Oops, you've got a typo! It's "IYKYK," which is nerd for "If You Know, You Know," in text slang. IYKYK is an abbreviation of the phrase 'if you know, you know.' It is often used as a way of acknowledging some common knowledge, or a shared experience.