...in Bed
I do not remember who taught me how to improve fortune cookies, but whoever it was has provided additional amusement in my life many times. Fortune cookie messages can be funny if they happen to have a timely message, but usually they are rather generic and banal. To improve your fortune, add the phrase "in bed" to the end of the message.
Today my fortune read:
You are going to have a very comfortable old age (in bed).