Duke Nukem is the sunglasses wearing hero of the Duke Nukem first person shooter series, famous since the 1990s for cocky one liners delivered during alien fights. This French line plays on that persona by treating the boogeyman as real and as Duke himself, which fits the character's habit of turning threats into punchlines. Short voice clips like this spread on soundboards and in video edits because they are instantly recognisable, easy to drop into a scene, and funny when used out of context.