Put it at the peak of a standoff, just as the other person moves to pass, then follow it with Darth Vader No for a second refusal and a Fail Sound Meme when they give up and walk away.
Bu Ses Hakkında
This 36-second clip holds Gandalf on the Bridge of Khazad-dum, staff raised against the Balrog, his voice swelling from a low command into the shout 'You shall not pass' as his staff cracks against the stone. It feels ancient, furious and immovable, turning a refusal into a heroic last stand. It comes from The Fellowship of the Ring (2001), with Ian McKellen as Gandalf in the Mines of Moria.