Mae Martin discusses President Trump's repeal of federal guidance allowing transpersons to use the bathrooms they identify with and her own odd experiences in public bathrooms. Andy Zaltzman proposes an innovative new alternative to the House of Lords. Jess Robinson ponders what it'd be like if Beyoncé, Adele and Little Mix targeted women the way advertisers do. The Guardian's Maeve Shearlaw offers insights into the recent assassination of Kim Jong Nam.