Horrible Science - Really Rotten ExperimentsExperience 10 fiendishly rotten experiments with Horrible Science Really Rotten Experiments! Engage in hilariously awful activities like hiding a cockroach in soap, moulding a fake poo, and making your own vile vomit and ghastly green slime. Contents: The set includes a plastic stomach, vinegar, funnel, bicarbonate of soda, goggles, plaster of Paris, poo mould, paints and paintbrush, green food colouring, fart pot, glycerine soap pieces, beaker,