A London commuter dared to navigate the famously grimy Underground completely barefoot, only to instantly regret this questionable footwear decision. Urban adventurers, beware: London’s transport system is no place for naked toes, as even socks stand little chance.

Dust on the Tube isn’t just dirt—it’s a mix of iron oxide, hair, skin, and mineral grit that clings to every step, as Hot_Vanilla_5811’s viral Reddit post proved. Even with Transport for London’s £2 million dust-busting upgrades, bare feet never stood a chance.