Sans (Genocide): !?..

Sans (Pacifist): !?.. they both take a moment to realize whats happening

Sans (Both at once): A fracture in time and space, and we end up in the same location! they both look at you

Sans (Genocide): Look pal, you’re human I must kill you.. before you go haywire and kill us next.

Sans (Pacifist): Hey, hey! Other me, relax, maybe this one’s not-so bad? My frisk is a pacifist and not a genocidal maniac unlike yours!