1.      Holy cow (name) is (age) now! Happy Birthday

2.      (name's) (age) today and that's no bull! Happy Birthday!

3.      (name) don't have a cow you're only (age) now! Happy Birthday!

4.      We herd (name) is out to pasture at (age) Happy Birthday!

5.      (name) we are moooved by your (age) Happy Birthday!

6.      Happy Birthday, (name) Hope your day is udderly fabulous

7.      Don't have a cow (name)! It's only a birthday

8.      (name) is over the hill & out to pasture Happy Birthday

9.      (name's) an udder year older! Happy Birthday

10.  What a cow-tastrophy (name's) an udder year older!

11.  Moos Flash! It's (name's) (age) birthday    

12.  (name's) over the hill and out to pasture!

13.  (name), it's your birthday! Milk it for all it's worth!

14.  You are (age) (name), party till the cows come home!

15.  ", till the people come home"

16.  Moo Hoo, (name's) (age)! 

17.  (name) You've aged so graze-fully!

18.  (name) you don't look calf your age!

19.  (name) you look bovine my darling!

These are only suggestions. We can put your own special message on the sign.