Meaning:
The weather is cold.
Background:
The winter months between September to April have Rs; May to August don't.
The phrase is often used in the advice `Don't eat oysters unless there is an
R in the month'. Henry Buttes made a reference to this as early as 1599, in
Dyets drie dinner:
"The oyster is unseasonable and unwholesome in all months that have not the
letter R in their name".
- www.phrases.org.uk [edited]
-------------------------------------------------------------------------------
October. This is one of the peculiarly dangerous months to speculate in stocks.
The others are July, January, September, April, November, May, March, June,
December, August and February. - Mark Twain
