Q1: Why isn't (insert meme name here) mentioned in this article?
A1: Wikipedia is not an infinite repository of indiscriminate information; we cannot mention those phenomena which do not meet a standard of notability and verifiability.
Q2: What does it take to make a new addition to the list?
A2: Memes must be proven of being notable for inclusion, using reliable sources that are verifiable.
Q3: Why do all additions need sources?
A3: This is an enforcement of Wikipedia policy, to ensure that only factual detail is added, and to prevent synthesis and original research, which may pose problems such as factual errors and conflict of interest.
Q4: Finding sources is boring. Can't somebody else do it?
A4: The burden of finding sources is on you, as the contributor, not on any other editor. Contributors are required to find credible sources on their own, and not rely on other editors in obtaining sources.