Probably the brainchild of a bored parent, this borderline evil challenge can break the atmosphere of monotony at home, filling it with ewws, urghhhs and screams from kids and ‘gotchas’ from parents.

Just a little anecdote from the history of products for children: During the 1970s, Franken Berry cereal sent some number of kids to the ER, because it turned their poop an alarming shade of pink.