"A lame duck is a man who cannot pay his differences, and is said to waddle off." [Thomas Love Peacock, "Gryll Grange," 1861]Sometimes also in naval use for "an old, slow ship." Modern sense of "public official serving out term after an election" is recorded by 1878 in Amer.Eng., from an anecdote published in that year of President Lincoln, who is alleged to have said, "[A] senator or representative out of business is a sort of lame duck. He has to be provided for."
I've heard my granny cracketc. In that region, Dandy is dim. of Andrew. In vogue in London c.1813-19. His fem. counterpart was a dandizette (1821) with Fr.-type ending. The adjective dandy first recorded 1792; very popular c.1880-1900.
O' sixty twa years back
When there were sic a stock of Dandies O