The drunken konadicure from a few weeks ago definitely deserves this label, as does this one:
Wet 'n Wild Rustic, Konad Special Polish in Black, Plate M57
I was hanging out with some friends, and I let one of them pick my mani. This was the result.
It's not that it's hideously ugly, but it's definitely fairly tacky. I think the base color is so pretty that overall it winds up being forgivable. My friend's fiance said it reminded him of a prostitute, though, which I think kind of says it all!