"Kilroy was here" in a meme originating from WW2. Soldiers would doodled this image on anything from ammo cans to bombs. One day during the Potsdam Conference Joeseph Stalin had to take a s***. Upon entering the outhouse he saw a drawing of a man peering over a wall dubbed "Kilroy was here", perplexed, he asked his aide "who is kilroy". So who is Kilroy? Nobody really knows…
