Aleyküm selam is the traditional reply to the Islamic greeting selamün aleyküm, meaning peace be upon you also. Online, the shortened Turkish version became a meme sound when users started recording it in an exaggerated voice and adding lan, a casual slang term similar to bro. The clip spread through Turkish soundboards, WhatsApp groups and short video edits, where it is now used less as a religious greeting and more as a humorous way to announce an arrival or acknowledge a friend.