EXCLUSIVE: Jaboukie Young-White and Danielle Macdonald are negotiating to star in an untitled Paramount Players comedy written and produced by Bo Burnham and directed by Amy York Rubin. Burnham, who wrote and directed the acclaimed Eighth Grade, is producing with Chris Storer. The project made the rounds under the title Gay Kid and Fat Chick, but it’s currently untitled and will be getting a new one before it goes into production. Rubin has directed episodes of SMILF and A…