While riding the train this morning, a man standing next to me used the term “five Gs” to refer to $5000. He didn’t appear to be a gangster (“I needs that five Gs next week, Muggsy, or I’m gonna rip your fuckin’ eyeballs out. Capisce?”) nor was he trying to be funny. I guess he’s just one of those people that uses terms like that in normal conversation. At least he didn’t say “five large”.