Milhouse is Not a Meme
Wikisimpsons - The Simpsons Wiki
"Milhouse is Not a Meme" is a paradoxical statement and a well-known debate on 4chan about what makes an Internet meme and what doesn't, using Milhouse Van Houten as an example. Since the birth of the debate on 4chan in 2005, the phrase has been typically used to initiate a chain post of recursive nature. Due to its recurrence over time, "Milhouse is not a meme" is often referred to as a forced meme. The meme is generally used now to explain what is not a meme.
An entry on Urban Dictionary for "Milhouse" states the definition as: "Milhouse is NOT a meme!"