Ah, funny birthday wishes can really make someone's day! Adding humor to a birthday greeting often lightens the mood and brings laughter to the celebration. You might say something like, "You're not getting older; you're increasing in value!" or "Age is just a number, but cake is a way of life!" Do you have a particular friend or family member in mind that you’re crafting this wish for? I’d love to help you come up with a personalized quip that will bring a smile to their face!