The traditional saying on a birthday cake is "Happy Birthday." It is also common to write out the celebrant's age on the cake. Birthday cake sayings can be funny or serious and should always be made personal if possible.
When creating a birthday cake saying, the most important thing is relating it to the person who is having the birthday. Thinking about what she likes and what she finds amusing is the best way to come up with a saying to write on the cake.
Sayings can be jokes, famous quotes and loving statements to name a few. What to write on a cake also depends on the age of the person having the birthday. If the person is an adult, sayings can be more mature humor or serious quotes that would be beyond a child's comprehension or recognition. However, if the cake is for someone young, she might like a cuter or lighter saying that relates to something with which she is more familiar.
Some famous quotes that are good sayings for cakes include "Youth has no age," "Life begins at 40," and "To me old age is 15 years older than I am." Depending on the birthday celebrant's tastes, a cake with no saying can also be appropriate. Cakes come in all shapes and sizes, and creating a cake in the shape of some treasured object or with an image of a loved one printed on top can also be quite meaningful.