Mucus Attack - Mad Science Author:Kathy Burkett Taste bud tricks. Artificial mucus. Skeleton models made out of marshmallows. Mr. Flask has his sixth graders studying the science of the human body. The professor eagerly watches their experiments and comes up with one of his own: a super-powered muscle-regenerating body rub. Too bad he couldn't keep that huge vat of goo from flooding the gym!