Lightly touch on 40 being "vintage" or a new chapter, rather than focusing on being "old".
Mention early memories (e.g., his birth or childhood) and how quickly the time passed. 40Th Birthday Speech For Son
Highlight his career, character, and personal growth without sounding too formal. Lightly touch on 40 being "vintage" or a
Reiterate how proud you are of the man he has become. Speech Structure (The ABC Method) Heartfelt Birthday Message to a Son on His 40th Birthday 40Th Birthday Speech For Son