Pun on abandoned (“immoral”) habit and riding habit (“woman's garment for horseback riding”).
abandoned habits pl (plural only)
- (archaic, British slang) The clothing worn for horseback riding by the prostitutes on Lady's Mile in Hyde Park (the carriageway along the northern bank of the Serpentine).
- “abandoned habits” in Albert Barrère and Charles G[odfrey] Leland, compilers and editors, A Dictionary of Slang, Jargon & Cant, volume I (A–K), Edinburgh: The Ballantyne Press, 1889–1890, page 2.
- Farmer, John Stephen (1890) Slang and Its Analogues, volume 1, page 3