That worn out old canard comes from the Vienna School lecture series by Freud which has been misquoted for ages. The 10th Lecture (on dreams) include reference to phallic symbols. A student asked Freud for examples. He spewed a whole litany of them. The included guns, spears, fishing rods, pointers, steeples, cigars, towers and zeppelins but only the gun reference is ever quoted. He also said that a fear of weapons is a sign of sexual insecurity.