What's the matter, you can't come up with rules? Can't you observe the world around you and analyze cause and effect?
Memes aren't brought about by discussion and asking if something has meme potential. They just happen. People just find it amusing and it spreads.
And also: you asked the wrong question. Not "Why" but "Is" as in "Is this meme potential?" but then again, asking is the fastest way to kill the meme potential. It's like a comedian asking if something is funny, or why is it so funny.
No, cause and effect works everywhere. For example:
Cause: Make a comment stating that everyone here is a sick bastard and deserves to die.
Effect: Generate massive debate and/or flame war.
See how that works? From that we can induce: as a rule of thumb, you shouldn't insult people unless you want to instigate a large argument.
Yes, people wonder why something is funny, but that's only after the fact. The best jokes and memes work when you don't have to explain or wonder why it's funny.
They should be able to award posthumous gold badges ;_;
Yuaaa!!!Yu!Yu!YuYuYuat least the children...!Reimu will die, butThere won't be any more to come out!If I take all the poisonSo...The poison comes out from here!Reimu knows!Reimu will protect them!Reimu is the teacher!Right..!Understand?!must be protected at all costs...!Fight?As if I could....!But at this rate, the children...Mister human...!From here, teacher will...My feet are tired! (Slurred)We've arrived outside!
Everyone!Definitely...!I will definitely protect the children!...If Reimu doesn't save themKeep on moving!Everyone, don't get separated from teacher!to hide until the extermination is overFrom here, we have to find a safe placeIt's not over yet!We've finally arrived (Slurred)What to do...