I'm having a tough time reading this, but I think it says, Dear Kevin, this is Julian, your son.
7 seconds sound clip from the Big Daddy movie soundboard.
You can hear this line at 00:09:54.089 in the Blu-ray version of the movie.
Quote context
[...]
- Yeah?
- Lady gave me $5 to bring him over here.
- Later.
- What, are you selling raffle tickets or something?
- Oh, boy.
- It's me. I got something to tell you.
- If this note is true, it's your kid.
- What are you talking about? (2)
- I'm having a tough time reading this, but I think it says, Dear Kevin, this is Julian, your son.
[...]