That was to Lady Astor....it’s quite a quote. I wish I could have heard the remarks the preceded that exchange.
Here is a little background you might find interesting.
Lady Astor was born Nancy Witcher Langhorne, an American daughter of Chiswell Dabney Langhorne of Danville, Virginia. After divorcing her first husband she moved to England. Three years later she married Waldorf Astor.
Her father-in-law, William Waldorf Astor, was the great grandson of John Jacob Astor. In 1919 her father-in-law died. Nancy's husband succeeded his father as the second Viscount Astor of Hever Castle and he entered the House of Lords, vacating his seat in the lower House.
Nancy became a candidate for her husband's vacant seat and won -- the first woman to ever hold a seat in the House of Commons. She would hold that seat, as a Conservative Member of Parliament until retiring in 1945.
She was known as a fierce debater. There is a famous exchange between Winston Churchill and Lady Astor when they were both staying at Blenheim Castle visiting the Marlboroughs. The two politicians had been at each other's throat all weekend when Lady Astor said, "Winston, if I were your wife I'd put poison in your coffee." Whereupon Winston said, "Nancy, if I were your husband I'd drink it."