Black-bottoms were braggarts, sons of Limne. When they were behaving most disgracefully, their mother said they should watch out in case they fell in with a hairy-arse. So when they had fallen in with Heracles they were tied up on a [?]pole. Then he saw them laughing and bending down, and he asked the reason. They replied that it was a saying of their mother's, "we will fall in with a hairy-arse"; and Heracles laughed and released them from their ties.[1]
[Note] that white-bottomed men used to be ridiculed in comedy as effeminate.[2]