" Boys need to have the courage to fight back!” their mother continued. “If you want to keep on playing with girls all the time, I’m going to have to snip off your weenie!” “Oh!” gasped Masako. “What’s the matter?” said her mother, slightly annoyed at having her lecture interrupted. “I know why Yoshio is afraid of going to the bathroom, and why he always wets his bed! It’s because of what you say when you tell him off for playing with the girls!” “What?” said their mother, looking first to Masako, then to Yoshio. “The scary woman Yoshio sees in the bathroom at night – it’s you, Mum! And the reason she’s always holding scissors is because, well you know, the scissors are for...” Masako watched her mother’s face change as she slowly put the pieces together. "

― Yasutaka Tsutsui , The Girl Who Leapt Through Time