When I fist saw this I thought to myself, "Great a Korean LMFAO" and I ignored it. Tired of doing international stuff; one get's in a domestic mood from time to time. But it's really been buzzing over the weekend (e.g. mems on facebook and the like). You know what this is a rebirth of, right? Remember the Six Flags guy? Maybe this guy's American popularity could simply be nostalgia.