My Grandad used to say
Thirsty days hath September,
April, June and November;
All the rest are thirsty too,
Excepting Februaury, when you get wet through.

Grammatically speaking, it ought to be "Thirty days have September, April, etc." It's taken me over forty years to spot that...!

He also used to say
Mary had a little lamb, its fleece was black as soot,
And into Mary's bread and jam his sooty foot 'e put

Steve