Front: Happy 100th to a very special lady!
Inside: Congratulations on your continued existence!
Your loving grandson,
Front: Happy birthday, Grandma! Sorry all your friends are dead :(
Inside: but at least you can't remember them! :D
Front: Guess what, Grandma? You've been around a whole century!
Inside: You outlasted Grandpa by 20 years! Good job!
Does it get lonely at night?
Front: Its almost time to say goodbye
Inside: so please don't forget to give me the combination to that big safe in your basement. You promised!
Front: Happy 100th! You made it!
Inside: Ever wonder if there's really a Heaven? I do!
Let me know!