Kilroy was here is a meme that became popular during World War II, typically seen in graffiti. Its origin is debated, but the phrase and the distinctive accompanying doodle became associated with GIs in the 1940s: a bald-headed man with a prominent nose peeking over a wall with his fingers clutching the wall.
Engraving of Kilroy on the National World War II Memorial in Washington, D.C.
A depiction of Kilroy on a piece of the Berlin Wall in the Newseum in Washington, D.C.
Israeli soldier sleeping during the 1947–1949 Palestine war, Chad is seen on the wall together with inscription "Wot? No Arabs", 1948.
Comrades had drawn Chad together with the statement "What no women", the head of Donald Duck and the word "Jampie" on the back of a rain jacket of a Dutch soldier, 1948.
A meme is an idea, behavior, or style that spreads by means of imitation from person to person within a culture and often carries symbolic meaning representing a particular phenomenon or theme. A meme acts as a unit for carrying cultural ideas, symbols, or practices, that can be transmitted from one mind to another through writing, speech, gestures, rituals, or other imitable phenomena with a mimicked theme. Supporters of the concept regard memes as cultural analogues to genes in that they self-replicate, mutate, and respond to selective pressures. In popular language, a meme may refer to an Internet meme, typically an image, that is remixed, copied, and circulated in a shared cultural experience online.
Richard Dawkins coined the word meme in his 1976 book The Selfish Gene.
Imitating the famous cover of the Beatles album Abbey Road (1969), on which the band members cross the road in front of the Abbey Road Studios in a row, has become popular with fans and London visitors.
The four actresses of the Japanese Manga/media franchise Milky Holmes reenact the Beatles cover in 2010, extending the original Beatles meme by their film costumes.
In 2011, four cosplayers imitate the above meme during the Manga convention Paris Manga 2012 at a zebra crossing in Paris, thus further separating the meme from the root situation of 1969 tied to the Abbey Road zebra crossing.