riddle of the sphinx, n.All

The Riddle of the sphinx (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠probably a distorted version of the child's first great problem: where babies come from.