Happy 40th birthday! I’m so blessed to have you as my son. You have always made me so proud!
Happy 40th birthday! You make my life complete. I lack for nothing with you in my life. I have all the joy and love I need and want.
Do you have some spare time in your life? Then maybe this is the right time to start searching for the Fountain of Youth! Happy fortieth.
Happy 40th birthday! I love every aspect of our life together. We are true soulmates in love.
You know you are forty when you stop using Facebook to socialize and start using it to spy on your kids. Happy 40th birthday.
Happy 40th birthday! We love you. You can always depend on us to support you through your forties and forever.
Stop waiting for perfect moments in your life. Every second is as perfect and as priceless as you want it to be. Happy 40th birthday.
Strive to be a 40-year old that makes people go ‘I wanna be like that when I turn forty’ Happy birthday.
Happy 40th birthday! Wishing you a birthday with all joy and wonder you deserve and a decade full of all the great things life has to offer.
The best part about turning forty is that you can blame everything on midlife crisis. Happy birthday.
The funny thing about age is that the more you think about it, the older you feel. Happy birthday.
Happy 40th birthday! We're so proud of you. You've turned into a kind, loving grownup!
Maturity and wisdom are great assets to have, but they are useless if you don’t unburden your life’s liabilities with smiles and laughter. Happy 40th birthday.
Happy 40th birthday! I love you more every day. You are the world's most lovable son.
Everyone grows older, but only a few make the most of it. Who are you going to be? Happy birthday.
Don’t imprison yourself in thoughts of how life has gone by. Free yourself in the hope of what lies ahead. Happy birthday.
Turning forty isn’t a bad thing. It’s what your whole life has led up to. Make the most of it. Happy birthday.
Life is a book and your forties are the chapters when it all starts making sense. Happy 40th birthday.
Happy Birthday sir, your wisdom exceeds your age and so shall it continue to grow and glow. You are a great inspiration to me.