Driving around yesterday afternoon, I happened to see this decal on the back of a truck, although I couldn’t get a picture of it. This is what came up on an image search:
As chance would have it, I had mentioned this “Laconic phrase” that very morning in Western Civ.! The Persians say, “Give up your weapons!” and the Spartans reply: “Come and take them” (“Molōn Labe”). This has resonance in American gun culture for obvious reasons. The Michigan State Spartans use it on their helmets too.
Although I think my personal favorite is “If we win this war, you will be slaves forever!” to which the Spartans gave the monumentally Laconic reply: “If”.