Bourgeois, for those who have not had the absolute pleasure, is a 25-year-old engineering graduate who came to prominence on social media by making TikTok videos about his great passion: trains. The unforced joy on his face when a locomotive goes by (any locomotive, though his favourite classes are the 37 and 158 and his least favourite the 170), and his ease with his geekiness, quickly made him a star.