A fork of Rural Dictionary
n. /floʊ-boʊ/ 1. A hobo who lives in a sewer or storm drain, especially those using the flow of water as a primary means of transportation. 2. Any subterranean vagrant inhabiting man-made tunnels.
"The tunnels beneath Moscow host a veritable legion of sewerbound psychotics, squatters, flobos, hookers (or "manholes" as they're called in the local slang), underpimps, pipemen, cricketeers, and thieves - and not a few specimens of truly unique megafauna - warily coexisting in the city's sprawling, twilit netherworld." -Vitaliy Kaprov, De Historibus Muscovum Chthonium (1924)