"You're not old; you're just young guy who forgot what the heck happened. Happy bday!"
"Since meeting you, I've thought of you often...how did you get so ugly? Just teasing, foxy. Happy birthday!"
"Here is to all your birthday dreams coming true...well, maybe not every year, you don't want to be get greedy. Happiest of birthdays!"
"I wish for you the most wonderful of birthdays in which your fondest of desires become reality."
"I am wishing you a happy and joyful b-day...that shouldn't be too hard, after all you do know me!"
"May you have as great a friend as you have been to me!"
"There are many things I could say to you on your bday. Like, who's going to pay for all this? But, I'll just keep to, 'have a great day!'"
"Like one of the better goat cheeses, you have just gotten finer with time."
"I'd wish for you a million candles on your cake, but I don't own stock in the wax business."
"May you have a lovely and lively time on your bday."
"Interestingly, we always think of old age as someone much older than ourselves."
"You normally pick up the tab; but since it's your b-day, I guess I'll take care of things...Alright, alright. I'll pay for it."
"May you have happiness in your future endeavors...happy birthday from a vaguely familiar friend."
"Many folks would wish you more years for your birthday. You know, people who haven't actually met you! Just kidding, happy birthday!"
"May your birthdays be filled with cake and pudding--sort of like an eclair."
"I want to share many great things with you on your bday...let's start with your cake. Happiest of birthdays!"
"You seemed to have reclaimed your youth; or maybe, you picked up some at the 'lost and found'"