High Society Dame: "You, sir, are drunk".
Winston Churchill: "And you, madame, are ugly. In the morning I'll be sober, but you'll still be ugly."
WC yes, but perhaps not Churchill; methinks that was WC Fields.
off to Google now to confirm ...
d@mn I hate being wrong!!!
Sir Winston Churchill delivered the line. Several sites indicate that the unfortunate recipient was Lady Astor.