Dutchman's trousers?

This plant has many names: Old-fashioned bleeding-heart, Venus's car, Lady in a bath, Dutchman's trousers, Lyre-flower, Lamprocapnos spectabilis, formerly Dicentra spectabilis.

I wonder who decided to give this wonderful plant with these beautiful flowers such awful names like for instance Dutchman's trousers, Lady in a bath!