L-L-LUNAJACK!

Immediately after the release of "Harry Potter and the Order of the Phoenix", in july 2007, the first images of Luna Lovegood/irish actress Evanna Lynch started popping out in 4chan. The fascination of some forum members for both the actress and the character culminated in the creation of a new minority, the Lunafags(as already stated in some articles, the suffix "fag" denotes a minority in 4chan). the so-called Lunafags started to interrupt discussions about cooking, cats, guns or anything else, just to post images of Luna Lovegood, followed by the word "L-L-LUNAJACK!". The Lunafags often try to make combo-Lunajacks.
it is considered a forced meme by Encyclopedia Dramatica.