1. A meme that isn't really funny anymore
2. A meme that isn't popular anymore
3. The grandfather of a string of memes (ex. among us is now amog us but the grandfather is kinda dead now)
A meme that has been overused, usually by normies. Some examples are:
1) Pepe
2) Ugandan Knuckles 3) Dab
Bill: Hey, checkout this Ugandan Knuckles meme!
Mike: That memes dead.
Bill: No, its not a dead meme if I still quote it!
Lily: Its dead you normie! Its because of you!