Fun French Facts

I'm not sure if these "facts" are all true and I do not know who originally wrote this. I received the following as part of a longer e-mail filled with interesting trivia. I'm reproducing only the parts that concern French!

Q: Why do ships and aircraft use 'mayday' as their call for help?
A: This comes from the French word m'aidez -meaning 'help me' -- and is pronounced, approximately, 'mayday.'

Q: Why are zero scores in tennis called 'love'?
A: In France, where tennis became popular, the round zero on the scoreboard looked like an egg and was called 'l'oeuf,' which is French for 'the egg.'  When tennis was introduced in the US, Americans (mis)pronounced it 'love.'

Q: In golf, where did the term 'Caddie' come from?
A. When Mary Queen of Scots went to France as a young girl, Louis, King of France, learned that she loved the Scots game 'golf.'  He had the first course outside of Scotland built for her enjoyment. To make sure she was properly chaperoned (and guarded) while she played, Louis hired cadets from a military school to accompany her.  Mary liked this a lot and when returned to Scotland (not a very good idea in the long run), she took the practice with her. In French, the word cadet is pronounced 'ca-day' and the Scots changed it into ‘caddie.’