I just realized that today I am officially 31 and 1/2 years old!
Here is the song I sang to myself (same tune as the original):
"Happy half birthday to me, cha cha cha.
Happy half birthday to me, cha, cha cha."
(I only get half of it.)
Here is the cake I gave to myself (again only half):
I am sorry to say, however, that you simply don't get presents on your half birthday. That is the rule.
When is your half birthday and what type of half cake will you have? Whatever you do, just don't forget to sing the song to yourself, it is molto importante (Italian for: very important)!