Ep 4. The Nightmare on Glickerstreet

Only Lars is scared at a zombie-clown horror movie and he begins to see everyone as a zombie-clown and so Noam invents a device to remove the idea from Lars only to cause the z-c to become real. The z-c begins to grown, feeding on the fears of everyone. The gang creates monsters to fight the z-c only to have them all join forces. Only Lars can dream up something to defeat all the monsters.