Sadly, I've recently discovered that two of my very favorite WSC quotes are very likely spurious... alas.
1 - while weaving his way across the Commons Lobby after a heavy night in the bar, fellow MP Bessie Braddock (not the most facially favored, it must be said) stopped him and observed loudly, "Winston, you are drunk !". He flashed back, "and you, madame, are ugly - but in the morning, I shall be sober !"
Dang… always put that one down to WC Fields
I'll be crushed if the first use of the phrase "Iron Curtain", attributed to Churchill (from a speach he made at a univeristy in Missouri) turns out to have actually been Fields!