One a quiet and lonely night, Beverly Crusher decided to give into temptation and used the ship's holodeck to explore her most forbidden fantasy. A fantasy that became more real than she ever could've imagined
"Yes, dear, and one day soon I must tell you the purpose which menstruation has in Nature's creative plan -- but not today." [Callender, Mary Pauline (1938) "Marjorie May's 12th Birthday", Kotex. Co., p. 12.]