Cake of happy birthday:
 - happiness: 2kg, better more than less.
 - love: generous 3kg.
 - friendship: 1kg for each friend.
 - luck: 8 servings
 - optimism: two cups
 - sprinkle a layer of trust everywhere
 - enthusiam: 20 giant spoons,
 - irony: as you need
Mix it all together until it's perfectly smooth, bake for the whole day, and then cut in 365 slices and enjoy every day of the year!