This subject has come up in the adjective thread, but I think it deserves a slot to itself. The suggestion was made (by duellingbouzoukis I think) that May was the only acceptable folk month. Well, I'm sure he is right that it is the most popular folk month, but I'm sure we can rack our brains and come up with some more contenders. I'll kick off with "Rosebud in June", and Spenser the Rover went home on the fifth of November.
Any others? By the way, the song "The Months of the Year" is not permitted, too easy.