The clip comes from Dorkly, the comedy outlet best known for short animated parodies of video games, and its Sonic videos in particular. Those sketches take familiar game characters and give them deliberately mundane, deadpan dialogue, which is where the flat huh neat delivery fits in. Short lines from the series were later clipped for soundboards and reaction edits, because a two second understatement can be reused far outside its original scene. It remains popular as a low key alternative to louder shocked reaction sounds.