ride a horse foaled by an acorn
Definition from Wiktionary, the free dictionary
- (obsolete, slang) To be hanged at the gallows.
1828, Bulwer-Lytton, Edward, chapter 82, in Pelham: or The Adventures of a Gentleman, page 385:
- "What ho, my kiddy!" cried Job, "don't be glimflashy; why you'd cry beef on a blater; the cove is a bob cull, and a pal of my own; and moreover, is as pretty a Tyburn blossom as ever was brought up to ride a horse foaled by an acorn."