Not everyone will know, not everyone will understand. Some things are meant to stay private...secret even...similar to "What stays happens in Vegas". The best secrets are hidden in plain sight, and "IYKYK" - the fragrance - is no exception. This fragrance is a nod to the unknowable, the inside joke that only you and your best friend(s) know.
If you don't understand, then this may not be for you :)