Be careful this Sunday if you take the subway in Lisbon. In fact, you may be surprised, pleasantly or not, by slightly undressed travelers. This January 12th is the "No Pants Subway Ride Lisboa", which will once again challenge all the brave passengers of the Lisbon metro. The goal ? Traveling without pants. Yes, only in underwear ! The initiative comes from New York and will once again be present in the Portuguese capital. She promises to generate smiles and some chills. Lisbob, the expatriate assistant in Portugal, tells you all about this day in underwear in the Lisbon metro.