I once had an English teacher who gave copious quizzes. Once, when someone complained about the work, he replied, “If you think my quizzes are bad you should see my testes.” It was an all-boys Catholic school, which explains how he could get away wish such crude sentiments. Nevertheless, I saw a talk about an organism that would put him and his abundant quizzes to the shame he deserves. The planarian, a flat, freshwater dwelling worm with comical eyespots and a superlative reputation for regeneration has another surprise under its belt. In addition to two ovaries just south of its tiny brain, the sexual form of some planarians has dozens of testes spread throughout its body.