Example output
Happy 40th Birthday, Lambert!
I hope your special day is as well-maintained as your house and as joyful as walking your dog! You are one of the most dependable and reliable people I know, and I am grateful for your friendship.
Speaking of being reliable, I've got a joke for you:
Why don't scientists trust atoms?
Because they make up everything!
I hope that made you chuckle. Have a wonderful day, Lambert, and may all your birthday wishes come true!