Then there's the "controversial" lyric from the days of relative innocence, when The Standells printed fuggers as the word of dubiosity they used as a euphemism for the obvious in their hit, Dirty Water. Some folks contended they said thuggers, which made some sense in the context of the lyrics, others boringly said it was muggers, but most folks thought they sang the F-word and just printed fuggers on the sheet music to cover it. There are only four citations for fuggers on OneLook which don't fit the usage here, so this is prety much a nonsense word in this context. Here's the lyrics:

Yeah, down by the river
Down by the banks of the river Charles (aw, that's what's happenin' baby)
That's where you'll find me
Along with lovers, fuggers, and thieves (aw, but they're cool people)
Well I love that dirty water

--The Standells, Dirty Water, 1966

from the American Heritage Dictionary: